Eating vegetables every day is linked to living longer, but eating more than three servings a day doesn’t help much more.
Scientific Claim
Each additional daily serving of vegetables is associated with a 5% lower risk of all-cause mortality, with maximum benefit observed at approximately three servings per day.
Original Statement
“The summary estimates were... 0.95 (0.92 to 0.99; P=0.006) for vegetables... We also found evidence of a non-linear association for vegetable consumption (P=0.01 for non-linearity)... A lower risk of all cause mortality was observed in association with higher vegetable consumption at about three servings a day (0.75, 0.66 to 0.86).”
Evidence Quality Assessment
Claim Status
appropriately stated
Study Design Support
Design supports claim
Appropriate Language Strength
association
Can only show association/correlation
Assessment Explanation
The claim uses appropriate associative language and reflects the study’s non-linear dose-response analysis. No causal verbs are used, and confidence intervals are reported correctly.
Evidence from Studies
Supporting (1)
This big study found that eating one more serving of veggies each day lowers your risk of dying from any cause by about 5%, and the more you eat up to about five servings, the better — so three servings is still a great goal.