Diet & Nutrition
Fad Diets: A Review
A look at what defines a fad diet, why they persist, and what the evidence consistently shows.
What you put into your body shapes everything from energy, mood and sleep to your long-term health prospects and life expectancy. We believe the individual foods and nutrients you eat are critical, so this page offers proven diet and nutrition advice and guidance on building sustainable, enjoyable, healthy eating habits.
Diet & Nutrition
A look at what defines a fad diet, why they persist, and what the evidence consistently shows.
Diet & Nutrition
A clinically developed, very low-fat plant-based diet with strong evidence for reversing heart disease.
Diet & Nutrition
A whole-food dietary pattern based on uncooked, unprocessed foods with genuine benefits and real limitations.
Diet & Nutrition
A phased low-carbohydrate diet focused on "good carbs" and "good fats" for weight and heart health.
Diet & Nutrition
A structured, periodic low-calorie protocol designed to trigger the benefits of fasting without full abstinence.
Diet & Nutrition
Medically essential for coeliac disease, but widely adopted beyond its evidence base by the general population.
Health & Wellbeing
Intermittent fasting produces real, measurable improvements in blood pressure and cholesterol.
Diet & Nutrition
Not a diet to follow, but a pattern millions fall into, with well-documented health consequences.
Health & Wellbeing
Fasting has real, biologically plausible effects on the brain. Still, the human evidence is more nuanced.
Health & Wellbeing
Intermittent fasting consistently improves blood sugar and insulin sensitivity, especially in people with type 2 diabetes.
Diet & Nutrition
Intermittent fasting can support fat and weight loss. But probably not for the reasons most people think.
Diet & Nutrition
The traditional eating pattern of one of the world's longest-lived populations is low-calorie, mostly plant-based.