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 sourcesCalciumCalcium-rich foods
The best everyday sources of calcium go well beyond a glass of milk: dairy like yogurt and cheese, calcium-fortified orange juice and plant milks, canned sardines and salmon eaten with their soft bones, calcium-set tofu, and low-oxalate leafy greens such as kale and bok choy. Calcium is the mineral your body uses to build and maintain strong bones and teeth and to keep your muscles contracting, your nerves signaling, and your heart beating steadily, and because your body cannot make it, all of it has to come from food and drink. Most adults need 1,000 mg a day, rising to 1,200 mg for women 51 and older and for all adults over 70. The per-serving amounts in the table below come from the NIH Office of Dietary Supplements and USDA data, so you can see how quickly a few of these foods add up.
See the best sourcesVitamin CVitamin C foods
The richest everyday sources of vitamin C are colorful fruits and vegetables eaten fresh: red and green bell peppers, citrus fruits and their juice, kiwifruit, strawberries, broccoli, and Brussels sprouts. Vitamin C (ascorbic acid) is a water-soluble vitamin your body uses to build collagen, defend cells as an antioxidant, support normal immune function, and absorb iron from plant foods, and because humans cannot make it or store much of it, you need a little from food every day. It comes almost entirely from produce, split across two families: vitamin-rich vegetables like peppers and broccoli, and fruits like oranges, kiwi, and berries. One quirk sets vitamin C apart from most nutrients: it is fragile, so heat, light, air, and long storage steadily degrade it, which is why fresh and lightly cooked produce delivers the most. The per-serving amounts in the table below come from the NIH Office of Dietary Supplements and USDA data, so you can see how quickly a single serving covers a full day.
See the best sourcesFolateFolate-rich foods
The richest natural sources of folate are dark leafy greens like spinach, legumes such as lentils, chickpeas, and black-eyed peas, plus asparagus, Brussels sprouts, avocado, and citrus fruits, while in many countries fortified grains like bread, pasta, cereal, and rice add synthetic folic acid on top. Folate (vitamin B9) is a water-soluble vitamin your body uses to build DNA and make new cells, which is why it matters so much during pregnancy and for forming healthy red blood cells, and because your body stores little of it you need a steady supply from food. Adults need about 400 mcg DFE per day, rising to 600 mcg DFE in pregnancy. Amounts are measured in dietary folate equivalents (DFE) because your body absorbs the synthetic folic acid in fortified foods and supplements more efficiently than the folate that occurs naturally in food. The per-serving amounts in the table below come from the NIH Office of Dietary Supplements and USDA data, so you can see how quickly a few of these foods add up.
See the best sourcesVitaminico for iPhone
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