MayauMiao
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Stay healthy, GAF!
Results suggested a consistent causal effect of higher BMI on lower mental wellbeing. There was little evidence that the other physical health traits were leading to less happiness and life satisfaction. The same pattern of results was seen in a follow-up analysis using the UK Biobank cohort of over 300,000 individuals aged 40 to 70 years old. Here the authors were able to look at different aspects of life satisfaction and found that the key impact of higher BMI was on lower satisfaction with health. They were also able to show that the effect is present from age 40 through to age 70, and in both men and women.
When testing whether mental wellbeing caused any of these physical health traits, the authors found little evidence for a causal impact in that direction, but this analysis is limited because there are so far fewer genetic variants for mental wellbeing. As research uncovers more of the genetic variants associated with mental health traits, researchers will be able to test this direction of effects more thoroughly.
http://www.bristol.ac.uk/news/2018/september/bmi-wellbeing.html