No, eating more fruit and vegetables is correlated with improved mental wellbeing. In fact, the study, even though it was longitudinal, did not dissect if increasing the amount of fruits and vegetables eaten across a lifespan causes increased happiness even though they could have! The headline, and TFA, are like saying having more TVs per capita causes fewer babies to die. They are both obviously correlative, and clearly not causational.
If the UK is anything like the US, there are some obvious confounding factors, with the most obvious being that poor people cannot afford to eat more fruit and vegetables, and that poor people are actively persecuted in our society. Hence you get studies that output the above headline.
If the UK is anything like the US, there are some obvious confounding factors, with the most obvious being that poor people cannot afford to eat more fruit and vegetables, and that poor people are actively persecuted in our society. Hence you get studies that output the above headline.
This isn't really news people.