Truth Nutrition

Research Database

8 topics — all backed by peer-reviewed, independently funded research

Processed foodStrong evidence

Ultra-processed foods and cardiovascular disease risk

Large-scale cohort studies consistently show that high consumption of ultra-processed foods is associated with significantly elevated risk of cardiovascular disease, even after adjusting for overall calorie intake and nutritional profile.

n = 105,1595 years
IndependentThe BMJ
MeatStrong evidence

Red and processed meat consumption and colorectal cancer

Multiple large cohort studies and meta-analyses have established a clear dose-response relationship between processed meat intake and colorectal cancer risk. The IARC classifies processed meat as a Group 1 carcinogen based on this body of evidence.

n = 800,000+10+ years
IndependentThe Lancet Oncology
SugarStrong evidence

Sugar-sweetened beverages and type 2 diabetes

Evidence from multiple independent prospective studies confirms that regular consumption of sugar-sweetened beverages is a significant independent risk factor for developing type 2 diabetes, beyond the effect of excess calorie intake alone.

n = 310,81914 years
IndependentDiabetes Care
SupplementsModerate evidence

Omega-3 fatty acid supplements and cardiovascular outcomes

Recent large randomised controlled trials have produced mixed results on omega-3 supplementation for cardiovascular disease prevention, revising earlier optimistic findings. The picture is more nuanced than widespread supplement marketing suggests.

n = 25,8715.3 years
IndependentNew England Journal of Medicine
FibreStrong evidence

Dietary fibre intake and all-cause mortality

A comprehensive systematic review and meta-analysis commissioned by the WHO analysed 185 prospective studies and 58 clinical trials, finding strong evidence that higher dietary fibre intake is associated with reduced risk of multiple chronic diseases and all-cause mortality.

n = 4,635,000Varies (prospective cohorts)
IndependentThe Lancet
Artificial additivesEmerging evidence

Artificial sweeteners and metabolic health

Emerging research challenges the long-held assumption that artificial sweeteners are metabolically neutral. Recent large prospective cohort studies suggest potential associations with metabolic syndrome, though causality is not yet established.

n = 102,8659 years
IndependentThe BMJ
DairyModerate evidence

Full-fat dairy and cardiovascular disease

Contrary to decades of public health messaging, recent large cohort studies have found no significant association between full-fat dairy consumption and increased cardiovascular disease risk, and some suggest a modestly protective effect for certain dairy types.

n = 938,46510+ years
IndependentAmerican Journal of Clinical Nutrition
VegetablesStrong evidence

Fruit and vegetable intake and stroke risk

A large meta-analysis confirms a dose-response relationship between fruit and vegetable intake and stroke risk reduction, with each additional 200g daily portion of fruit or vegetables associated with measurably lower stroke risk.

n = 760,629Varies (pooled)
IndependentStroke (AHA)