Evidence-backed eating patterns
Whole-food plant-based diet
A stricter plant-led approach built on whole or minimally processed plant foods, which also limits added oils, refined carbohydrates and processed products.
What people typically eat
Vegetables, fruit, wholegrains, beans, lentils, nuts and seeds in close-to-natural form; meals cooked from scratch.
What is restricted
Added oils, refined grains, sugar, most packaged foods and, in strict versions, all animal products.
Why people try it
Chosen for maximal health benefit, weight loss and, in some programmes, support for heart disease or diabetes management.
Realistic advantages
- Scored at the top of an American Heart Association review of popular diets for heart-healthy elements
- Naturally high in fibre and low in energy density, aiding weight control
- Very low in saturated fat and dietary cholesterol
Realistic disadvantages
- Demanding, cooking from scratch most meals is a real time cost
- Strict versions risk low B12, omega-3, calcium, iodine and zinc without planning
- Eating out and social occasions become harder
Strength of evidence
Moderate evidence
Component foods are well evidenced; whole-pattern outcome trials are fewer and smaller.
Likely cost and difficulty
Low-to-moderate ingredient cost but high time cost; high difficulty.
Nutritional risks
B12 supplementation is essential in fully vegan versions; watch iodine, calcium and omega-3.
Who should avoid it
People with a history of eating disorders should approach strict versions cautiously.
Is professional supervision advisable?
Advisable for fully vegan versions, especially in pregnancy, adolescence or illness.
References
Written by the Slimr editorial team. How we review diets.
