Learn About Vitamins and Supplements on EBT

Understanding Vitamins and Their Role in Nutrition

Vitamins are organic compounds that your body needs to function properly. Unlike carbohydrates, proteins, and fats that provide energy, vitamins work in much smaller amounts to support thousands of processes in your body. They help your immune system fight infections, enable your body to heal wounds, and support bone strength. Your body cannot produce most vitamins on its own, which is why getting them through food or supplements matters.

There are 13 essential vitamins that scientists have identified. These include vitamin A, which supports eye health and immune function; B vitamins (including B1, B2, B3, B5, B6, B7, B9, and B12) that help convert food into energy; vitamin C, which aids in wound healing and immunity; vitamin D, which helps your body absorb calcium for bone health; vitamin E, which protects cells from damage; and vitamin K, which plays a role in blood clotting. Each vitamin has specific functions and different food sources where you can find them naturally.

According to the National Institutes of Health, many Americans consume less than recommended amounts of certain vitamins, particularly vitamin D, vitamin B12, and folate. The reasons vary—some people have limited access to fresh produce, others follow restrictive diets, and some have health conditions that affect nutrient absorption. Understanding which vitamins your body needs and where to find them is the first step toward better nutrition.

The recommended daily amounts for vitamins vary based on age, sex, and life stage. For example, adult women need 700 micrograms of vitamin A daily, while adult men need 900 micrograms. Children's needs differ from adults, and pregnant women have higher requirements for certain vitamins like folate. The Dietary Reference Intakes, established by the National Academies of Sciences, Engineering, and Medicine, provide these guidelines based on scientific research about what amounts prevent deficiency and support optimal health.

Practical Takeaway: Keep a simple list of the 13 essential vitamins and their basic functions. Look up the daily recommended amount for your age and sex. Notice which vitamins appear in foods you already eat regularly versus which ones might be harder to get from your current diet.

Getting Vitamins from Food Sources

Nutrition experts recommend getting vitamins from whole foods whenever possible because foods contain not just individual vitamins, but also other beneficial compounds like fiber, minerals, and phytonutrients that work together. For instance, an orange provides not only vitamin C but also folate, potassium, and fiber. This combination of nutrients often works better in your body than a single isolated vitamin.

Vitamin A comes naturally in foods like sweet potatoes, carrots, spinach, and kale. Your body can use vitamin A directly from animal sources like liver, eggs, and dairy, or it can convert beta-carotene from plant sources into vitamin A. A single medium sweet potato provides about 961 micrograms of vitamin A, which exceeds the daily need for most adults. Similarly, leafy greens are nutritional powerhouses—one cup of cooked spinach contains about 888 micrograms of vitamin A and substantial amounts of folate and vitamin K.

B vitamins appear in many foods but are concentrated in specific sources. Vitamin B12 is found mainly in animal products like meat, fish, poultry, eggs, and dairy—which is important for vegans and vegetarians to know. Folate (vitamin B9) appears abundantly in legumes like lentils and chickpeas, leafy greens, and asparagus. A half-cup of cooked lentils provides about 179 micrograms of folate. B6 comes from chickpeas, bananas, potatoes, and chicken. By eating a variety of plant and animal foods, most people can meet their B vitamin needs without supplements.

Vitamin D poses a special challenge because few foods contain it naturally. Fatty fish like salmon, mackerel, and herring are among the best dietary sources—a 3.5-ounce serving of salmon contains about 570 International Units of vitamin D. Egg yolks contain small amounts, and fortified milk typically contains 100 International Units per cup. However, your body also produces vitamin D when skin is exposed to sunlight. Studies suggest that about 10-30 minutes of midday sun exposure several times per week helps most people maintain adequate vitamin D levels, though this varies based on skin tone, geographic location, and season.

Practical Takeaway: Choose one meal this week and identify which vitamins it contains. Try adding one new food rich in a vitamin you don't consume often. For example, if you rarely eat leafy greens, add a handful of spinach to a smoothie or soup.

Exploring Vitamin Supplements: Types and Considerations

Vitamin supplements come in many forms: tablets, capsules, liquids, powders, and gummies. They range from single-vitamin products to multivitamins containing many nutrients. The forms differ in how your body processes them. For example, liquid supplements may be absorbed faster than tablets, but tablets often last longer and are easier to transport. Some people find gummies easier to take regularly, though they typically contain more sugar and may cost more per dose than tablets.

The Food and Drug Administration classifies vitamins as dietary supplements, not medicines. This means the rules for testing and approval differ from pharmaceutical drugs. Manufacturers must ensure supplements are safe and that label claims are truthful, but they don't need FDA approval before selling a supplement. However, the FDA monitors safety after products reach the market and can take action if problems emerge. Third-party testing organizations, such as USP (United States Pharmacopeia) and NSF International, verify that some supplements contain what the label says and are free from contaminants, though not all supplements undergo this testing.

When looking at supplements, understanding what you're reading on labels matters. A supplement label should list the serving size, the amount of each nutrient per serving, and the percent Daily Value, which shows how much of the recommended daily amount one serving provides. Labels also list inactive ingredients and may note if a product is organic, non-GMO, or free from common allergens. Be cautious of labels making disease claims—supplements cannot claim to treat, cure, or prevent diseases. Instead, they may describe how a nutrient supports normal function, such as "supports immune health" or "promotes bone strength."

Different populations have different supplement considerations. Older adults may benefit from vitamin B12 supplements because the ability to absorb B12 from food decreases with age—the American Academy of Family Physicians recommends that adults over 50 get B12 from fortified foods or supplements. Vegans and vegetarians who don't eat animal products may want to consider B12 supplements since plant sources are limited. Pregnant women need more folate and may benefit from prenatal vitamins. People with certain health conditions or taking specific medications should discuss supplements with a healthcare provider, as some interactions can occur.

Practical Takeaway: If you currently take or are considering a supplement, read the label carefully and note the serving size and amount per serving. Look for third-party testing marks like USP or NSF. Write down any questions to discuss with your doctor or pharmacist.

Understanding Supplement Regulations and Safety

The Dietary Supplement Health and Education Act (DSHEA) of 1994 established the legal framework for how supplements are regulated in the United States. Under this law, manufacturers are responsible for ensuring their products are safe before marketing them. However, manufacturers don't need to prove effectiveness the way pharmaceutical companies must prove drugs work. This doesn't mean supplements are unsafe—it means the level of testing and evidence differs from medications. The FDA can take supplements off the market if they're found to be unsafe or if companies make false claims.

Safety concerns with supplements can involve several issues. Some supplements contain ingredients not listed on the label, sometimes including prescription medications or harmful substances. Others contain much higher amounts of nutrients than labeled. Contamination with bacteria, heavy metals, or other substances occasionally occurs. Between 2007 and 2016, the FDA received reports of over 23,000 adverse events related to dietary supplements, though most were not serious. Serious side effects, though uncommon, can include liver damage, kidney problems, or dangerous interactions with medications.

Certain supplements interact with common medications. For example, vitamin K, found in high amounts in some supplements, can reduce the effectiveness of blood thinners like warfarin. St. John's Wort, an herbal supplement, can decrease the effectiveness