Again and again, studies show that people are really bad at reporting what they eat. Like "not reporting having eaten enough food to survive for a fortnight" bad. So take the results of any "health and diet" study with a pinch (or a truckload) of salt.

https://www.science.org/content/article/people-are-bad-reporting-what-they-eat-s-problem-dietary-research

@science.org