title: Nutrition, chronic disease, and the problem of proof.
authors.forename: Robert P
authors.initials: RP
authors.lastname: Heaney
mesh_terms: D000375:Aging / Q000502:physiology*; D002908:Chronic Disease / Q000453:epidemiology*; D019317:Evidence-Based Medicine; D006801:Humans; D018673:Nutrition Policy; D009747:Nutritional Physiological Phenomena; D009751:Nutritional Requirements; D009752:Nutritional Status; D011640:Public Policy; D012107:Research Design; D014808:Vitamin D Deficiency / Q000150:complications / Q000453:epidemiology* / Q000517:prevention & control