> In the 2 prospective cohorts with many repeated measurements of diet and up to 30 years of follow-up, we observed that a higher intake of fruit and vegetables

> In the 2 prospective cohorts with many repeated measurements of diet and up to 30 years of follow-up, we observed that a higher intake of fruit and vegetables was associated with a lower risk of total mortality and cause-specific mortality in a nonlinear manner. Our analysis in the NHS and the HPFS and in a meta-analysis of 26 prospective cohort studies documented that intake of ≈5 servings of fruits and vegetables daily was associated with the lowest mortality, and higher intake was not associated with additional risk reductions in mortality. The thresholds of risk reduction in mortality were 2 servings daily for fruit intake and 3 servings daily for vegetable intake. Higher intakes of most subgroups of fruit and vegetables were inversely associated with mortality, whereas intakes of starchy vegetables, fruit juices, and potatoes were not associated with mortality. https://www.ahajournals.org/doi/10.1161/CIRCULATIONAHA.120.048996 https://www.ahajournals.org/doi/10.1161/CIRCULATIONAHA.120.0... A study doesn't need to be "double-blind, randomised and controlled" to have value. This study of 108,000+ people over 28-30 years is going to be more pertinent to the average person than, for example, an anecdote.