Vegetarian diets have a well-deserved reputation for good health, but you may wonder if you are meeting your nutrition needs. While loaded with many nutrients, plant-based diets may fall short on nutrients found primarily in animal-sourced foods. In some cases, you may need a supplement.
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Here are the top 6 nutrients for vegetarians to consider:
1. Vitamin B12Why is it important?
Vitamin B12 is critical for your health, playing a role in everything from red blood cell formation to nerve and brain function. Vitamin B12 is only found in animal-based foods. It"s essential to find reliable sources if you are a vegetarian or a vegan.How much do I need per day?
Men and women 14 years and older: 2.4 mcgVegetarian sources of vitamin B12:Dairy foodsEggsFortified plant-based milk alternativesFortified nutritional yeastDo I need a vitamin B12 supplement?
If you regularly eat dairy foods and eggs, you are likely to get enough vitamin B12.
If you don"t consume vitamin B12-fortified foods, you risk a deficiency and should take a vitamin B12 supplement. Ask your doctor if you should have your vitamin B12 levels monitored.
2. IronWhy is it important?
You need iron to make the oxygen-carrying part of red blood cells. Iron deficiency is a common cause of anemia.How much do I need per day?
Typically, people need the amounts shown below. However, the suggested RDA for vegetarians is 1.8 times higher than the list shown due to decreased iron absorption from plant sources. Men 14-18 years: 11 mgMen 19-50 years: 8 mgWomen 14-18 years: 15 mgWomen 19-50 years: 18 mgMen and Women 51 years and older: 8 mg
To help absorb iron, eat foods high in vitamin C such as citrus fruits, strawberries, and peppers, along with iron sources.
Vegetarian sources of iron include:SpinachSwiss chardBeansBlackstrap molassesFortified cerealsDo I need an iron supplement?
It depends on your risk for iron deficiency. Older adults typically don"t need extra iron. Women of childbearing age have a higher risk of iron deficiency and may need supplements. Ask your doctor if you should have your iron level tested. Don"t take a supplement unless you are advised to, as too much iron can be a health risk.
3. CalciumWhy is it important?
Calcium is a mineral found in the greatest amounts in the body. It provides bone structure and is essential for muscle and nerve function.How much do I need per day?
Men 19-70 years: 1000 mgMen 71 years and older: 1200 mgWomen 19-50 years: 1000 mgWomen 51 years and older: 1200 mgVegetarian sources of calcium include:Dairy productsFortified, plant-based, milk alternativesTofu made with calcium Kale, broccoli, and collards Blackstrap molassesDo I need a calcium supplement?
If you regularly eat dairy products, calcium-fortified foods, or high-calcium plant foods, you may be getting enough calcium. You may need a supplement if you consume fewer than three servings of high-calcium foods daily.
If you avoid dairy or calcium-fortified foods, consider a supplement. Plant-based calcium sources come with other essential nutrients, such as vitamin K and magnesium.
4. Vitamin DWhy is it important?
Vitamin D and calcium go hand-in-hand. Vitamin D helps calcium absorption and plays a role in immune health and hormone production.How much do I need per day?
Men and women 19-70 years: 15 mcg (600 IU)Men and women 70 years and older: 20 mcg (800 IU)
Note: There is debate about optimal vitamin D intake and blood levels. Talk to your healthcare provider if you have questions about your specific needs.Vegetarian sources of vitamin D include:Sunlight, though not a reliable source if you use sunscreen or live at high latitudeEggs Fortified dairy foods and plant milks Do I need a vitamin D supplement?
Perhaps. It is unlikely that vegetarians and non-vegetarians get adequate vitamin D from their diets, even if they consume fortified foods. Take vitamin D supplements with a meal that includes fat for better absorption of this fat-soluble vitamin.
5. ZincWhy is it important?
Zinc is vital for immune function and wound healing. Because we don"t store zinc well in our bodies, daily consumption of high zinc foods is important.How much do I need per day?
Men 14 and older: 11 mg Women 14-18 years: 9 mgWomen 19 years and older: 8 mgVegetarian sources of zinc include:Dairy Eggs LegumesSoy (tempeh has absorption due to fermentation)Nuts and seedsWhole grains (sprouted grains and leavened grains allow better absorption)Some fortified cerealsDo I need a zinc supplement?
It"s possible to get enough zinc from plant foods if you have a well-balanced diet. Many multivitamins contain zinc. Do not take more than the upper limit of 40 mg of zinc per day.
6. Omega-3 fatty acidsWhy are they important?
Omega-3 fatty acids may help reduce inflammation and lower your risk of heart disease. They are needed for cell membrane formation and are helpful for immune function and brain health.
The main omega-3s are docosahexaenoic acid (DHA), eicosapentaenoic acid (EPA), and alpha-linolenic (ALA) acid. DHA and EPA are the active forms of omega-3 and come from fish and seafood sources. ALA comes from plant sources and is converted to DHA and EPA by the body only in small amounts.How much do I need per day?
There is no established guideline for DHA and EPA intake.
The daily guidelines for alpha-linolenic acid (ALA) are:Men 14 years and older: 1.6 gWomen 14 years and older: 1.1 gVegetarian sources of omega-3s (from ALA) include:Flaxseed, flaxseed oilChia seedsWalnutsSoybean oilCanola oilDo I need an omega-3 supplement?
Taking a supplement is a reasonable way to boost your omega-3s. Most omega-3 supplements are from fish sources. Fortunately, algae-sourced DHA and EPA supplements are becoming more available.
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Resources for more information
See vitamin recommendations for all populations here.See mineral recommendations for all populations here.Academy of Nutrition and Dietetics" position paper on vegetarian dietsVegetarian Resource GroupVegetarian Nutrition Practice Group of the Academy of Nutrition and Dietetics