A "dietary vitamin" refers to a type of nutrient that your body needs in small amounts to stay healthy. It is found in the food you eat, and it helps your body function properly and stay strong. Full definition
Importantly, those low levels occurred independently of dietary vitamin C intake, meaning that cigarettes reduced vitamin C levels directly. (supernaturalacnetreatment.com)
Vitamin D from sunlight has very different effects than dietary vitamin D (from food or supplements) 2. (philmaffetone.com)
Increasing dietary vitamin C can contribute to improved skin health. (ahealthblog.com)