Desxifrant el rellotge vital que portem dins

 Are your organs ageing well? The blood holds clues

Organ aging signatures in the plasma proteome track health and disease

L'envelliment deixa senyals a les cèl·lules i aquests canvis bioquímics provoquen danys a òrgans i poden causar finalment la mort. Saber perquè i com envellim  ha esdevingut un repte per a molts investigadors, és com treballar sobre la causa de les causes de la salut. Es tracta de conèixer els canvis moleculars en els òrgans humans quan anem envellint. L'article de Lopez-Otin, Blasco i Serrano a Cell aquest gener passat mostrava una revisió àmplia de l'estat de la qüestió. Article per llegir i guardar.

Ara a Stanford han trobat la manera d'identificar proteïnes a la sang que assenyalen l'envelliment de determinats òrgans del cos. No tots els òrgans evolucionen per igual i quan un s'espatlla pot afectar un altre. Hi havia aportacions anteriors molt importants des de l'epigenoma que ja ho apuntaven. Ara bé, el que apareix ara és molt més holístic i pràctic, i l'aprenentage automàtic ha ajudat a assolir el resultat. A l'editorial de Nature diuen:

To explore how organs age, Oh and his colleagues first analysed nearly 5,000 proteins in blood samples from 1,398 healthy adults. They identified about 850 proteins that originated mainly from a single organ and trained a machine-learning algorithm to predict a person’s age on the basis of the levels of these proteins. They validated their model using blood samples from more than 4,000 other people.

The results showed that an organ’s biological age is linked to disease risk. For example, roughly 2% of participants had accelerated heart ageing — that is, their levels of blood proteins relating to heart ageing differed substantially from those of other people of the same age. Having a prematurely old heart was linked to a 250% increased risk of heart failure, the authors found.

Atès que el rellotge vital de cadascú ens diu l'edat dels òrgans, estem a punt de poder identificar amb precisió quin és el risc personal d'emmalaltir. Aquest és un salt rellevant en el coneixement, han trobat els biomarcadors dels biomarcadors. 

La qüestió immediata que apareix és què cal fer amb aquesta nova informació del risc? Cal saber-la tota? Hi ha riscos mitigables? evitables?. L'entorn i els comportaments, com ajudaran a millorar i no espatllar els riscos ja existents?

PS. Grifols segueix la pista d'això, hi és al darrera. Mireu el darrer signant de l'article Wyss Coray, i la seva empresa Alkahest.

PS. Si us llegiu l'article sencer de Nature, hi trobareu detalls de molt interès, com aquest:

The kidney ageotype was the most significantly associated with metabolic diseases (diabetes, obesity, hypercholesterolaemia and hypertension), the heart ageotype was the most significantly associated with heart diseases (atrial fibrillation and heart attack), the muscle ageotype was the most significantly associated with gait impairment, the brain ageotype was the most significantly associated with cerebrovascular disease and the organismal ageotype was the most significantly associated with Alzheimer, AD. 

 At the population level, the two most significant associations between disease and age gap were between the kidney age gap and metabolic disease traits.

Si les proteïnes del plasma prediuen envelliment de l'òrgan i aquest prediu el risc de malaltia...aleshores ens cal conèixer com tenim les proteïnes del plasma. Ara bé, no m'interessa conèixer el risc de malalties no "accionables", no ho vull saber. Per altra banda, si que vull saber aquells riscos d'emmalaltir sobre els que puc contribuir a reduir-los o evitar-los, o aquells que l'entorn i el sistema de salut hi pot contribuir. 

Robert Mapplethorpe a la Galeria Senda

La petjada de la COVID

 Determinants of the onset and prognosis of the post-COVID-19 condition: a 2-year prospective observational cohort study

Trobo que no s'en parla prou de la petjada que la COVID ha deixat a alguns dels nostres cossos. L'Eric Topol se n'ha preocupat força i n'ha fet aquest resum:

I on diu Spain podeu considerar que diu Catalunya, perquè es refereix a aquest article. I la troballa després de 2 anys d'estudiar la població amb Post-Covid condition PCC, és aquesta:

The study included 548 individuals, 341 with PCC, followed for a median of 23 months (IQR 16.5–23.5), and 207 subjects fully recovered. In the model with the best fit, subjects who were male and had tertiary studies were less likely to develop PCC, whereas a history of headache, or presence of tachycardia, fatigue, neurocognitive and neurosensitive complaints and dyspnea at COVID-19 diagnosis predicted the development of PCC. The cluster analysis revealed the presence of three symptom clusters with an additive number of symptoms. Only 26 subjects (7.6%) recovered from PCC during follow-up; almost all of them (n = 24) belonged to the less symptomatic cluster A, dominated mainly by fatigue. Recovery from PCC was more likely in subjects who were male, required ICU admission, or had cardiovascular comorbidities, hyporexia and/or smell/taste alterations during acute COVID-19. Subjects presenting with muscle pain, impaired attention, dyspnea, or tachycardia, conversely, were less likely to recover from PCC.

Table 4Characteristics of the post-COVID-19 condition clusters.

	Cluster A	Cluster B	Cluster C
N (%)	139 (40.8)	152 (44.6)	50 (14.2)
Age, years, median (IQR)	50 (42–57)	47 (38–56)	45 (39–51)
Sex, female, N (%)	73 (52.5)	120 (78.9)	45 (90)
Hospitalization, N (%)	65 (46.8)	52 (34.2)	13 (26)
Intensive care, N (%)	10 (7.2)	5 (3.3)	1 (2)
Comorbidities, N (%)
Allergy	31 (22.3)	56 (36.8)	20 (40)
Obesity	32 (23.0)	39 (25.7)	13 (26.0)
Dyslipidemia	30 (21.6)	43 (28.3)	9 (18.0)
Hypertension	34 (24.5)	25 (16.4)	8 (16.0)
Lung disease	21 (15.1)	31 (20.4)	6 (12.0)
Persistent symptoms, N (%)
Fatigue	100 (71.9)	139 (91.4)	48 (96.0)
Neurocognitive complaints	62 (44.6)	128 (84.2)	46 (92.0)
Dyspnea	45 (32.4)	131 (86.2)	44 (88.0)
Headache	41 (29.5)	103 (67.8)	44 (88)
Myalgia	31 (22.3)	98 (64.5)	33 (66)
Arthralgia	39 (28.1)	92 (60.5)	47 (94)
Chest pain	31 (22.3)	76 (50.0)	45 (90)
Tachycardia	19 (13.7)	83 (54.6)	39 (78.0)
Cough	18 (12.9)	64 (42.1)	19 (38.0)
Neurosensitive symptoms	31 (22.3)	66 (43.4)	40 (80.0)
Diarrhea	14 (10.1)	59 (38.8)	26 (52.0)
Low grade fever	13 (9.35)	36 (23.7)	21 (42.0)
Smell alterations	34 (24.5)	38 (25)	30 (60)
Dermatological alterations	24 (17.3)	36 (23.7)	43 (86)
Dysphagia	9 (6.47)	18 (11.8)	27 (54)
Dysphonia	10 (7.19)	29 (19.1)	19 (38)
Recovery from PCC, N (%)	24 (17.3)	1 (0.7)	1 (2.0)

I la petjada després de dos anys persisteix encara en bona part de la població amb PCC. I moltes coses que encara no sabem... 

Modificar l'entorn obesogènic o medicalitzar l'obesitat?

 WHO European Regional Obesity Report 2022

A new class of drugs for weight loss could end obesity

Ens ho han dit moltes vegades, i l'informe de la OMS insisteix novament en explicar la situació de l'obesitat a Europa:

Overweight and obesity affect almost 60% of adults and nearly one in three children (‎29% of boys and 27% of girls)‎ in the WHO European Region. Recent estimates suggest that overweight and obesity is the fourth most common risk factor for NCDs in the Region, after high blood pressure, dietary risks and tobacco. It is also the leading risk factor for disability, causing 7% of total years lived with disability.

 Segons dades de l’Enquesta de salut de Catalunya (ESCA) 2020 la meitat de la població de 18 a 74 anys té excés de pes (sobrepès o obesitat), 58,8% els homes i 42,4% les dones. El 33,7% té sobrepès (42,0% els homes i 25,2% les dones) i el 17,0% obesitat (sense diferències entre homes i dones). Respecte a la població de 6 a 12 anys, el 35,9% té excés de pes (el 24,2% té sobrepès i l’11,7% té obesitat). 

Amb totes aquestes dades a la mà, què fem? Doncs, la primera opció segur que passa per menjar millor i fer exercici, responsabilitat sobretot individual. L'altra és canviant l'entorn obesogènic, responsabilitat sobretot col·lectiva. Ho he explicat i ens ho han explicat en moltes ocasions. Ara bé la novetat, és que des de fa uns mesos han arribat nous medicaments, es tracta de la tirzetapida i la semaglutida. El Economist hi dedica un especial aquesta setmana, i l'Eric Topol en va parlar amb molt de detall a finals d'any. El meu suggeriment és que hi feu una ullada per tal d'il·lustrar-vos d'un canvi que ve, i que resumeixen amb un titular a l'editorial que diu: Menja, injecta't, torna-hi. És a dir suggereix saltar-se precisament la prescripció inicial a la que feia referència i aprimar-se mitjançant injeccions de tirzetapida o semaglutida. D'això en podríem dir la medicalització de l'obesitat. Els preus al mes als USA són 1.300$ i 900$ respectivament. Per tant, la prescripció de l'editorial de l'Economist no sortirà barata d'entrada, i alhora té alguns efectes indesitjats. El resultat final podria ser que la falta de l'acció individual i col·lectiva, la paguem col·lectivament tots plegats, si el tractament acaba finançat amb diner públic.

Seguirem atents per veure com evoluciona a Europa. Tot plegat hauria de fer reaccionar als governs per tal de modificar l'entorn, la política alimentària i l'accés a determinats greixos. Un metge citat a l'article diu: "l'obesitat és una resposta fisiològica al que ha esdevingut un entorn patològic".  I jo hi afegiria "un entorn patològic on els governs han estat capturats per la indústria alimentària"

PD. A es diari de Menorca: Y si el medicamento más "potente" del mundo es el ejercicio físico?

Coïnt olives, Van Gogh

PD. Gran 60 minutes sobre ChatGPT

Fighting obesity and sedentarism

 Healthy Eating and Active Lifestyles

The world is fat (2)

 Can the Obesity Crisis Be Reversed?

From conclusions: 

Ending the obesity epidemic will take both individual and collective action. Neither alone is sufficient. Individuals try to lose weight and keep it off, but the system is working against them. The route to population-wide weight loss will not be through trendy, unsustainable diets. It will be through widespread, appropriate, personalized, and comprehensive approaches.

The first action we all must take, no matter our size, is to educate ourselves about obesity—and you’ve been doing that by reading this book. People need to understand the structural, environmental, and genetic components of obesity. They need to see the ways in which systemic factors contribute to weight gain. The idea that obesity is a choice or a matter of willpower has been thoroughly disproved. The unfortunate fact that many people still believe this actively harms efforts to reduce obesity rates.

The government should first seek to change the public perception of obesity. Obesity is largely a result of structural forces, not just individual actions. A shared awareness of its origins could foster greater support for interventions that allow people to make healthier choices.

People and institutions need to work together to make healthy foods more accessible, affordable, appetizing, and convenient than unhealthy foods. Reversing the obesity crisis will require environments that promote physical activity and social movements that encourage people to get more exercise. We need to devote more resources to preventive efforts for all ages to improve our health.

To reverse the obesity crisis, we will need an all-hands-on-deck approach. Pharmacological advances, surgery, and other treatments should complement new policies, societal practices, and population-wide interventions that promote healthier diets and decrease food consumption. Improving the nation’s health may require implementing policies perceived as restricting personal freedoms that have long been granted to industries and individuals. But these policies will be essential to keeping the population healthy.

For individuals, the goal should be to reach and maintain your optimum weight, meaning the weight at which your body the optimal physical and mental health. 

Outline of free ebook:

INTRODUCTION: Struggling with Obesity

CHAPTER 1: How Do People Gain Excess Weight?

CHAPTER 2: Why Are People Getting Heavier?

CHAPTER 3: What Are the Consequences of Obesity?

CHAPTER 4: What Are the Best Ways to Lose Weight?

CHAPTER 5: How to Reverse the Obesity Crisis

Health behaviors and behavior change

 Behavioral Economics and Public Health

Health behaviors and practices constitute the foundation of good physical and mental health. The leading contributors to the global burden of disease include tobacco smoking, low-quality diets, alcohol abuse, physical inactivity, and obesity. Accordingly, encouraging people to adopt—and maintain—healthy behaviors is a major objective of public health. 

Today I recommend this book and this is what you'll find inside:

Chapter 1: An Introduction to Behavioral Economics and Public Health. Christina A. Roberto and Ichiro Kawachi

Chapter 2: Intertemporal Choices for Health. Justin S. White and William H. Dow

Chapter 3: Maintenance of Healthy Behaviors: Forming and Changing Habits. Dennis Rünger and Wendy Wood

Chapter 4: Emotions and Health Decision-Making: Extending the Appraisal Tendency Framework to Improve Health and Health Care. Rebecca Ferrer, William Klein, Jennifer Lerner, Valerie Reyna, and Dacher Keltner

Chapter 5: Social Norms, Beliefs, and Health. Brent McFerran

Chapter 6: Communicating for action: the importance of memorability and actionability. Jason Riis and Rebecca K. Ratner

Chapter 7:Nudging Individuals Toward Healthier Food Choices with the 4Ps Framework for Behavior Change. Zoë Chance, Ravi Dhar, Michelle Hatzis, and Kim Huskey

Chapter 8: Incentivizing Health Behaviors. Kristina Lewis and Jason Block

Chapter 9: Slim By Design: Moving from Can't to CAN.Brian Wansink

Chapter 10: Applying Behavioural Economics in a Health Policy Context: Dispatches from the front lines. Michael Sanders and Michael Hallsworth

Chapter 11: From Choice Architecture to Policy Infrastructure: Multi-Level Theory and the Political Economy of Health Behaviors. Frederick J. Zimmerman

The obesity industry

 The Hungry Gene. The Inside Story of the Obesity Industry

Precision medicine

 Precision Medicine for Investigators, Practitioners and Providers

Many topics under the same umbrella:

Table of Contents

Introduction

2. Role of genomics in precision medicine

3. High throughput omics in the precision medicine ecosystem

4. Infant gut microbiome

5. Paraprebiotics

6. Fecal transplantation in autoimmune disease

7. Drug pharmacomicrobiomics

8. CRISPR technology for genome editing

9. Engineering microbial living therapeutics

10. Organ on a chip

11. Multicellular in-vitro organ systems

12. The role of biobanks in biomarker development

13. Translational interest of immune profiling

14. Organoid pharmacotyping

15. Large datasets for genomic investigation

16. Modern applications of neurogenetics

17. Genomic profiling in cancer

18. Genomics in pediatrics

19. Genomics of gastric cancer

20.  Genomics of prostate cancer

21. MicroRNAs and inflammation markers in obesity

22. MiRNA sequencing for myocardial infarction screening

23. Cell free DNA in hepatocellular carcinoma

24. Non coding RNA in cancer

25. Germline variants and childhood cancer

26. Pharmacogenomics in cancer

27. Proteomic biomarkers in vireoretinal disease

28. Proteomics in respiratory diseases

29. Cardiovascular proteomics

30. Host genetics, microbiome, and inflammatory bowel disease

31. Sampling, Analyzing, and Integrating Microbiome ‘omics Data in a Translational Clinical Setting

32. Omics and microbiome in sepsis

33. Molecular and omics methods for invasive candidiasis

34. Lipid metabolism in colorectal cancer

35. Salivary volatolome in breast cancer

36. immunodiagnosis in leprosy

37. decision support systems in breast cancer

38. Electronic medical records and diabetes phenotyping

39. Clinical signature of suicide risk

40. Machine learning and cluster analysis in critical care

41. Artificial intelligence in gastroenterology

42. Algorithms for epileptic seizure prediction

43. Precision medicine in ophthalmology

44. Phenotyping COPD

45. Lifestyle medicine

46. Precision medicine for a healthier world

47. Aging and clustering of functional brain networks

48. Nutrigenetics

49. Genome editing in reproductive medicine

50. MRI guided prostate biopsy

51. Precision Nutrition

52. Theranostics in precision oncology

53. Precision medicine in daily practice

54. Imaging in precision medicine

55. Organoid for drug screening

56. Printing of personalized medication using binder jetting 3D printer

57. 3 D printing in orthopedic trauma

58. Consumer genetic testing tools in depression

59. The future of wearables

60. Tumor heterogeneity and drug development

61. Smartphone based clinical diagnosis

62. Smartphone biosensing for point of care use

63. Data security and patient protection

64. Blockchain solutions for healthcare

65. Ethical questions in gene therapy

66. Pitfalls of organ on a chip technologies

67. Regulatory issues of artificial intelligence in radiology

68. Academic industrial alliance

69. The future of precision medicine

70. Precision Medicine Glossary

71. Useful internet sites

The world is fat

 The Heavy Burden of Obesity – The Economics of Prevention

Almost a decade after the publication of the first OECD report on obesity, a new one has been released. This are the facts:

More than half the population is now overweight in 34 out of 36 OECD countries and almost one in four people is obese. Average rates of adult obesity in OECD countries have increased from 21% in 2010 to 24% in 2016, so an additional 50 million people are now obese. Despite a drive in the last decade to deal with increased obesity, more needs to be done amid sedentary lifestyles and an almost 20% increase in calorie supply – i.e. calories available for consumption – in the OECD over the past 50 years.

So what?

The OECD identifies four categories of policies to tackle the problem and gauges the effect of three promising “policy packages” to help countries achieve greater impact and coherence in tackling the obesity epidemic. Food and menu labelling, regulation of advertising of unhealthy foods to children and the promotion of exercise, including by doctors and schools, are among the measures analysed.

Most of the strategies requires a confrontation with the food industry, and governments usually try to avoid it. We'll see what happens.

On sugar and taxes

Should We Tax Sugar-Sweetened Beverages? An Overview of Theory and Evidence

The real question is how to tax the addiction industry. Sugar is only one case. Right now, these are the guiding principles (for sugar):

1. Focus on Counteracting Externalities and Internalities, Not on Minimizing
Sugary Drink Consumption
2. Target Policies to Reduce Consumption among People Generating the Largest
Externalities and Internalities
3. Tax Grams of Sugar, Not Ounces of Liquid
4. Tax Diet Drinks and Fruit Juice If and Only If They Also Cause Uninternalized
Health Harms
5. When Judging Regressivity, Consider Internality Benefits, Not Just Who Pays the
Taxes
6. If Possible, Implement Taxes Statewide
7. The Benefits of Sugar-Sweetened Beverage Taxes Probably Exceed Their Costs

Furthermore, sugar-sweetened beverage taxes are not a panacea—they will not, by themselves, solve the obesity epidemic in America or elsewhere. But sin taxes have proven to be a feasible and effective policy instrument in other domains, and the evidence suggests that the benefits of sugar-sweetened beverage taxes likely exceed the costs

 Robert Frank

Improving health in OECD countries

Health at a Glance 2017

Let me highlight toady one figure: 54% of adults in OECD countries today are overweight, including 19% who are obese. Obesity rates are higher than 30% in Hungary, New Zealand, Mexico and the United States.
Many indicators about current state of health in OECD and partner countries can be found in the report. And the public health message is:

While smoking rates continue to decline, there has been little success in tackling obesity and harmful alcohol use, and air pollution is often neglected

These are the new epidemics and prescriptions are not easy to find to curb the current trend.
The report shows many positive messages and this should be a reason for trust in our future, however the uncertainties regarding new risks and how to tackle remain.

Gramophone All Stars Jazz Band. Maraca Soul album. Iko Iko

The apocalypse and our true fate, who knows?

THE FIVE HORSEMEN OF THE MODERN WORLD: Climate, Food, Water, Disease, and Obesity

In the book of Revelation or Apocalypse of John, you'll find the seven bowls. Seven angels are thus given seven bowls of God's wrath, each consisting of judgements full of the wrath of God poured onto Earth:

First Bowl: A "foul and malignant sore" afflicts the followers of the Beast. (16:1–2)
Second Bowl: The Sea turns to blood and everything within it dies. (16:3)
Third Bowl: All fresh water turns to blood. (16:4–7)
Fourth Bowl: The Sun scorches the Earth with intense heat and even burns some people with fire. (16:8–9)
Fifth Bowl: There is total darkness and great pain in the Beast's kingdom. (16:10–11)
Sixth Bowl: The Great River Euphrates is dried up and preparations are made for the kings of the East and the final battle at Armageddon between the forces of good and evil. (16:12–16)
Seventh Bowl: A great earthquake and heavy hailstorm: "every island fled away and the mountains were not found." (16:17–21)

As you may notice Apocalypse is just that, a book. Daniel Callahan set a title of five horsemen of the modern world as a metaphor of current evils. Global warming, food shortages, water shortages and quality, chronic illness, and obesity could be the key ingredients of our fate?.
At the end, Daniel Callahan calls for a diplomatic model:

to persuade the research, academic, and policy communities to accept what I will call the diplomatic model of relationships, typically now seen between and among nations, and to open a serious dialogue with the business community

Agree.

Obesity: a multifaceted approach

The Current State of Obesity Solutions in the United States

We all agree that we need to face the obesity epidemic. But, when talking about solutions, difficulties and uncertainties  arise. US National Academies held a worksop on 2014 that described interventions designed to prevent and treat obesity in seven settings:
• early care and education,
• schools,
• worksites,
• health care institutions,
• communities and states,
• the federal government, and
• businesses and industry
The book is only a first approach to these experiences, though more evidence is needed in my opinion. They say in the book:

"Much of what needs to be done is clear, he said. The challenge now is to figure out how to do what needs to be done."

 DocField 2017

Now in Barcelona

Are You What You Eat?

Are You What You Eat? Healthy Behaviour and Risk Preferences

I am not strictly a fan of economic experiments. They are useful, but usually researchers achieve conclusions from samples and settings that are far from what happens really in population and geographies. However, some days ago I was looking at an article that it seemed of interest. They try to:

estimate the degree of risk aversion for a sample of young healthy adults and we explore its links with a broad range of risky behaviours considered together. Second, as indicator of the overall quality of diet, we complement, for the first time, the BMI with the Healthy Eating Index (HEI), and we relate both to estimated risk preferences

Sounds good, because the use of Body Mass Index is absolutely outdated and its relationship with risk aversion is crucial. This is the summary:

Our results show that risk preferences significantly differ across young adults with different, not extreme, health conditions. In particular, they reinstate the importance of conducting analyses that look separately at the two sub-samples of female and male subjects . This allows disentangling the links and interactions between preferences and key health variables such as smoking, and also to fully account for the gender-specific effects of the BMI and of alternative indicators of healthy weight.

Second, in our sample young women do not show any significant robust associations between risk preferences and BMI. Third, for young men – but not women – the HEI index appears to be significantly and consistently associated with risk preferences: across all specifications, healthier nutritional habits, tend to be robustly associated with higher risk aversion. This, together with the lack of significance of BMI-based indexes, suggests that, for subjects with not extreme health conditions, there is a wide scope to use measures alternative (or complementary) to the BMI, as indicators of the overall quality of diet.

That's it. And his final recommendation:

 From a health policy perspective, our study suggests that in young adults who have not yet developed chronic or extreme health conditions, looking at a comprehensive nutritional indicator such as the HEI could provide more direct insights to the deeply rooted behavioural mechanisms that drive health behaviours than considering an indirect and increasingly questioned measure such as the BMI.

Since children's obesity is one of the main challenges for health improvement, someone should take into account this message.

PS. Eliciting risk and time preference, the 2008 key article.

 Nancy Vieira

Approaching the golden age of epigenomics and epitranscriptomics

A new twist on epigenetics

If epigenomics is crucial to discard the genetic predestination paradigm, now we can add a new 'omics to the paradigm: epitranscriptomics. Last February, Nature published interesting news related to recent scientific developments:

The epigenome helps to explain how cells with identical DNA can develop into the multitude of specialized types that make up different tissues. The marks help cells in the heart, for example, maintain their identity and not turn into neurons or fat cells. Misplaced epigenetic marks are often found in cancerous cells.

 Chuan He and Tao Pan are two researchers that have been working on new ways of controlling gene expression

He and others have shown that a methyl group attached to adenine, one of the four bases in RNA, has crucial roles in cell differentiation, and may contribute to cancer, obesity and more. In 2015, He’s lab and two other teams uncovered the same chemical mark on adenine bases in DNA (methyl marks had previously been found only on cytosine), suggesting that the epigenome may be even richer than previously imagined.

The team had shown for the first time that RNA methylation was reversible, just like the marks found on DNA and histones.

Methylated adenine bases are the focus of research on gene expression.

Exercise as a socially contagious activity

Exercise contagion in a global social network

Disciplines as diverse as economics, sociology, medicine, computer science, political science and physics have recently become interested in the interdependence of behaviours across the human social network. In particular, scientists have begun to ask whether our health and other behaviours are contagious, in that our decisions and actions affect the decisions and actions of our peers. If behavioural contagions exist, understanding how, when and to what extent they manifest in different behaviours will enable us to transition from independent intervention strategies to more effective interdependent interventions that incorporate individuals’ social contexts into their treatments

A new  study offers some of the first hard evidence that health-related habits can spread — and so perhaps could be deliberately seeded and encouraged — by social influence and peer pressure. Previous research has sought such a contagious effect in factors such as obesity and smoking, but the results have been inconclusive.

Studies in social differences in health have a a new hurdle to tackle. How to boost social permeability? As Mackenback said in The Lancet on health inequalities: now it's personal.

PS. These are the results of the study in one figure:

A much-needed start: soda tax

Soda Politics: Taking on Big Soda (and Winning)

Obesity is a top concern on public health. Personal and collective responsibilities are linked. The concrete issue is the following one: government may require manufacturers to release information to consumers (about calories, composition, etc.), but is there anything else that he can do?
Current strategies fall short to achieve the goals of obesity reduction. Nutritional labels are not enough, are taxes an option?. Some countries have already implemented taxes on fizzy drinks, fat or salty foods. There are complex technical issues to be considered. However, The Economist says that taxes on fizzy drinks seems to work as intended. If this is really so, then there is a much-needed reason to start in this way.
Marion Nestle in her latest book "Soda Politics" provides the hole list of arguments. Any regulator should read in detail the book, specially part IX on "Advocacy: Soda caps, taxes and more", and take into account her recommendation:

 Let me acknowledge immediately that advocacy to reduce soda intake faces special challenges that distinguish it from advocacy for reduction of alcohol, tobacco, or junk foods. Like these other industries, the soda industry sells relatively inexpensive products that are available in almost every corner of the globe. Like them, this industry is extremely wealthy. Also like the others, health is the industry’s Achilles’ heel. But in sharp contrast to companies selling junk food, alcohol, or tobacco, Coca-Cola and PepsiCo consistently rank among the most admired, respected, and honored companies in the world. Health and environmental advocates must recognize the power of this favorable public perception when encouraging others to resist it.

PS. A must read. Understanding 25 years of health policy in Catalonia, released in this journal: Referent. You'll find an article that I have written for the occasion.

Tackling obesity: the toolbox

Patchy progress on obesity prevention: emerging examples, entrenched barriers, and new thinking

World Cancer Research Fund International NOURISHING framework 
Food policy framework for healthy diets and the prevention of obesity and diet-related non-communicable diseases. 

 Key message:

The problem of obesity must be reframed to acknowledge on one hand that individuals bear some personal responsibility for their health, but that, on the other hand, environmental factors exploit biological, psychological, social, and economic vulnerabilities that promote overconsumption of unhealthy foods. A vicious cycle is created in which the preference and demand for unhealthy products are not only shaped by the environment, but lead to environmental changes that further encourage consumption of unhealthy foods. This cycle makes it difficult for people to act in their own long-term self-interest, but it can be broken with regulatory actions from governments and joint efforts from industry and civil society to create healthier food systems.

Regulating sugar sweetened beverages

Searching for Public Health Law’s Sweet Spot: The Regulation of Sugar-Sweetened Beverages

Nowadays, obesity prevention lies at the heart on any public health policy. If sugar sweetened beverages contribute decisively to obesity, then something should be done. What?. A recent PLOS article explains the options:

The main regulatory approaches are taxes, restrictions on the availability of SSBs in schools, restrictions on advertising and marketing, labeling requirements, and government procurement and benefits standards.

On taxes:

Savvy regulatory design has tremendous potential. For example, there is growing evidence that taxes that are more salient to consumers, such as those included in a good’s posted price (rather than being levied at the register), are more likely to influence purchasing behavior

On public procurement, a practical suggestion for immediate application:

Restrictions on which beverages may be purchased using government funds are a less visible form of regulation, but one with potential to change the consumption patterns of large numbers of people. Outside public schools, these standards are most germane in two areas: procurement standards for public institutions (e.g., government agencies, hospitals, and prisons) and restrictions on what recipients of government benefits for the indigent may buy with those funds.
The UK’s Government Buying Standards prohibit central government bodies from  procuring SSBs larger than 330 ml and encourage the wider public sector to follow the guidelines. Massachusetts  and many US counties and cities have adopted nutrition standards for government contracts, but most apply to a limited set of institutions, such as childcare facilities or youth centers.

PS. My former posts on the same topic.
PS. Article: The impact of sugar sweetened beverages on depression risk in adults.
PS. Report: Scenarios of Macro-economic Development for Catalonia on Horizon 2030
PS. Report: FBBVA Essential Public Services.
PS. Report: Chronicle of a premeditated offensive.

Public Health Priorities

Start Well, Live Better: A Manifesto for the Public’s Health. London: UK Faculty of Public Health, 2014

These are the 12 suggested priorities for public health in UK for the next 5 years:

Give every child a good start in life

• Give all babies the best possible start in life by implementing the recommendations of the 1001 Critical Days cross-party report
• Help children and young people develop essential life skills and make Personal, Social, Health and Economic, and Sex and Relationship Education a statutory duty in all schools

• Promote healthy, active lifestyles in children and young people by reinstating at least 2 h per week of physical activity in all schools

Introduce good laws to prevent bad health and save lives

• Protect our children by stopping the marketing of foods high in sugar, salt and fat before the 9 pm watershed on TV, and tighten the regulations for online marketing
• Introduce a 20% duty on sugar-sweetened beverages as an important measure to tackle obesity and dental
• caries—particularly in children
• Tackle alcohol-related harm by introducing a minimum unit price for alcohol of at least 50 p per unit of alcohol sold
• Save lives through the rapid implementation of standardised tobacco packaging
• Set 20 m.p.h. as the maximum speed limit in built-up areas to cut road deaths and injuries, and reduce inequalities

Help people live healthier lives

• Enable people to achieve a good quality of life, health and wellbeing—give everyone in paid employment and training a ‘living wage’
• Reaffirm commitment to universal healthcare system, free at the point of use, funded by general taxation

Take national action to tackle a global problem

• Invest in public transport and active transport to promote good health, and reduce our impact on climate change
• Implement a cross-national approach to meet climate change targets, including a rapid move to 100% renewables and a zero-carbon energy system

As you can see, many similar things with our PINSAP, the Health Policy Consensus and Health Plan. However, after yesterday news the pending issue of our public health is mainly alcohol abuse. We should focus on what works to reduce alcohol and addictive substance abuse. And first of all, we need to understand the foundations and best approaches to the problem. I would suggest you have a look at this book and specially this one:

PS. Binge drinking 'costing UK taxpayers £4.9bn'  Does anybody know how much does it cost here???

PS. In Spain, publicly funded health expenditure reached 64.150 million € in 2012,the amount for financial system bailout was 101.283 million € (p.24). Don't forget it: these are the priorities.