U.S. supplements are a $152 billion almost-food industry
Pills, powders, and liquids promising extra vitamins, minerals, fibers, fats, or amino acids filled an American market worth about $151.9 billion in 2021. More than 95,000 products jostle for shelf space, and roughly sixty percent of adults take them—seventy-four percent past age sixty—yet labels cannot legally claim to cure disease.
The 1994 Dietary Supplement Health and Education Act defines supplements as oral products meant to add dietary ingredients such as vitamins, minerals, herbs, amino acids, or concentrates—not conventional foods, meal replacements, medical foods, preservatives, or pharmaceutical drugs. Nasal sprays and skin lotions do not qualify; FDA-approved drug ingredients cannot hide inside a supplement bottle. Companies may use structure/function wording like “helps maintain healthy joints” when they have substantiation, but must carry a disclaimer that regulators have not evaluated disease-treatment claims.
Multivitamins lead usage among product types. Europe separately harmonizes safety and labeling rules for food supplements across member states. A vitamin, strictly, is an organic compound an organism needs in small amounts but cannot synthesize enough of—ascorbic acid is a vitamin for humans yet not for every species under every circumstance. Tolerable upper intake levels exist for some vitamins; manufacturers can still sell servings above those ceilings, as when vitamin D products dwarf the 100 microgram daily upper level with 10,000 IU capsules sold without prescription.
The regulatory gap is the real plot. Americans often treat supplements as almost-medicine while the statute treats them as almost-food, shifting many quality and efficacy questions onto consumers and post-market enforcement. That design helps explain both the industry’s extraordinary scale and the recurring scandals when bottle contents fail to match labels or doses outrun the evidence base.
Source: Dietary supplement
