Cutting ultra-processed food
Last reviewed 25 August 2026 · Evidence-graded review — see Methodology
Ultra-processed foods are industrial formulations built from refined substances and additives: soft drinks, packaged snacks, reconstituted meats, most shelf-stable ready meals. Eating a lot of them tracks with obesity, diabetes, cardiovascular disease and depression, consistently, across dozens of studies. The pattern is strong even though no trial has tested the diet pattern against hard outcomes yet.
A 2024 BMJ umbrella review pooled the epidemiological meta-analyses: ultra-processed exposure was associated with higher risks of all-cause mortality, cardiovascular disease, type 2 diabetes, obesity and depression, with no outcome pointing the other way. Associations this consistent usually mean something, but they are still associations; people who eat more UPF differ in other ways too. Hence Moderate, not Strong.
Doing it: You do not need a clean diet, just a shorter ingredient list for most of your calories. Cook simple food most days, treat soft drinks as occasional, and let packaged snacks be something you buy rather than stock.
Who it suits: Everyone, gently. If your current diet is heavy in delivery apps and vending machines, the headroom here is bigger than any supplement could offer.
Sources
Next in diet: Time-restricted eating →
Prefer to start with what a blood test can tell you? All 48 diagnostic tests, ranked →