Best foods for the nutrients that matter most
By Vita · fact-checked against NIH ODS
The simplest way to close a nutrient gap is on your plate. Each guide below lists the best food sources of a key nutrient, with the per-serving amount from the NIH and how much you need in a day — so you can eat your way there before reaching for a supplement.
Iron-rich foods
Iron is an essential mineral your body uses to make hemoglobin, the protein in red blood cells that carries oxygen from your lungs to the rest of your body. When intake falls short, you can develop iron-deficiency anemia, whose hallmark signs are fatigue, weakness, pale skin, and shortness of breath. Food supplies iron in two forms: heme iron (from meat, seafood, and poultry), which your body absorbs well, and non-heme iron (from plants and fortified foods), which is absorbed less efficiently but is easy to boost with a few simple pairings. The foods below are among the richest everyday sources, with iron amounts drawn from the NIH Office of Dietary Supplements and USDA data.
See the best sourcesVitamin DFoods high in vitamin D
Vitamin D is the "sunshine vitamin" your body makes when skin meets sunlight, but food matters just as much, especially in winter, at higher latitudes, or if you spend most days indoors. Very few foods contain vitamin D naturally, and the richest sources are fatty fish and fish liver oils; a lot of what people get comes from fortified foods like milk and cereal. Adults aged 19 to 70 need 15 mcg (600 IU) per day, rising to 20 mcg (800 IU) after age 71. Below are real per-serving amounts from the NIH Office of Dietary Supplements and USDA data to help you hit that target from your plate.
See the best sourcesVitamin B12Vitamin B12 foods
Vitamin B12 (cobalamin) is a water-soluble nutrient your body cannot make on its own, so it has to come from your diet. It occurs naturally almost exclusively in animal-derived foods — meat, fish, shellfish, poultry, eggs, and dairy — because it is produced by bacteria and concentrated up the food chain. Plant foods contain virtually none unless it has been added, which makes fortified foods and supplements the practical route for vegans and many vegetarians. This guide lists the richest real-world sources with per-serving amounts drawn from the NIH Office of Dietary Supplements, so you can see exactly how much B12 a normal portion delivers against the 2.4 mcg Daily Value.
See the best sourcesMagnesiumMagnesium-rich foods
Magnesium is an essential mineral your body cannot make, so you have to get it from food. It is found most abundantly in plant foods: seeds, nuts, legumes, whole grains, and dark leafy greens (magnesium sits at the center of the chlorophyll molecule, which is why greens are such reliable sources). The foods below are ranked by how much magnesium they deliver per typical serving, using amounts from the NIH Office of Dietary Supplements. For reference, the Daily Value (DV) used on nutrition labels is 420 mg, and the Recommended Dietary Allowance is about 400–420 mg per day for adult men and 310–320 mg per day for adult women. Building meals around even two or three of these foods makes hitting your daily target straightforward.
See the best sourcesZincZinc-rich foods
Zinc is an essential trace mineral your body can't make or store in large amounts, so you need a steady supply from food. It powers your immune system, helps wounds heal, and supports normal growth, taste, and smell. Oysters top every list by a wide margin, but meat, poultry, seafood, beans, nuts, seeds, and dairy all contribute. The amounts below come from the U.S. National Institutes of Health Office of Dietary Supplements (NIH ODS) and USDA data, and reflect real, measured servings.
See the best sourcesOmega-3 (ALA)Omega-3 foods
The best sources of the long-chain omega-3s (EPA and DHA) are fatty fish — salmon, herring, sardines and mackerel — while the plant omega-3 (ALA) comes from flaxseed, chia seeds, walnuts and canola oil. Your body converts only a little ALA into EPA and DHA, so oily fish (or an algae-based supplement for vegans) is the practical way to raise those. Here are the top sources and how much omega-3 each serving delivers, from the NIH.
See the best sourcesVitaminico for iPhone
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