Proper nutrition is at the center of overall good health. By understanding balanced nutritional principles, meeting specific dietary needs, and keeping abreast of emerging trends, you can unlock your full potential and unleash performance gains at maximum capacity.

Multivitamins can help fill in nutritional gaps, but to maximize benefits it’s better to consume whole food sources of nutrition instead. Navigating through supplements aisle can sometimes feel like trying to navigate alphabet soup.

Vitamin A

Vitamin A is a fat-soluble vitamin found in many foods and supplements alike, including those rich in animal proteins such as meat. Vitamin A comes in the form of retinol, retinal and retinoic acid as well as several provitamin A carotenoids like beta-carotene.

Vitamin A intake should ideally come from food, however fortified products and dietary supplements may be needed to meet individual needs, particularly during key life stages or health conditions.

The Tolerable Upper Intake (UL) for preformed vitamin A is 10,000 IU/day. Supplements containing this nutrient should be taken in small doses with meals to maximize absorption. As with beta-carotene supplements, however, too much vitamin A or beta-carotene could lead to vitamin A toxicity in infants and adults, leading to symptoms including dry eyes and yellowing skin and mucus membranes. Talk with your physician before taking vitamin A or beta-carotene supplements; too much vitamin A could result in vitamin A toxicity with unpleasant symptoms including dry eyes as well as yellowed skin or mucous membrane yellowing from overexposure from too much beta-carotene exposure causing severe effects including dry eyes or yellowed mucous membrane yellowing from too much exposure from too much exposure overexposure and yellowing from too much exposure overexposure from overexposure from too much UV radiation exposure causing skin yellowing; see this page before taking vitamin or beta-carotene supplements; too much can lead to toxic levels that cause skin yellowing of skin or mucous membrane yellowing due to excess absorption through exposure to UV radiation causing toxic overexposure resulting in infants and adults as well as yellow skin color changes caused by too much exposure to UV radiation exposure which causes dry eyes as well as yellow skin pigmentation of skin or mucus membrane yellowing effects from UV light exposure during UV radiation from sun light exposure resulting from UV light from sunlight exposure in infants wholly!

Vitamin C

Vitamin C can be found in most multivitamins and supplements; it’s also available as a stand-in standalone pill. Most forms are easily absorbed, including sodium ascorbate, calcium ascorbate, mineral ascorbates and ascorbic acid with bioflavonoids – research has not demonstrated which forms are more beneficial.

Some individuals take vitamin C to strengthen their immune systems; however, proper health depends on more than just vitamins and minerals; diet, exercise, sleep and stress management all play important roles.

While certain supplements may promise memory improvement, Chuck Bell, Programs Director for Consumer Reports’ Advocacy division offers some insight on interpreting supplement labels.

Vitamin D

Serum concentrations of 25-hydroxyvitamin D (25(OH)D) is now the main indicator for vitamin D status, representing both endogenous synthesis and food and supplement sources [1]. Unfortunately, measuring serum 25(OH)D levels can be complex due to its short circulating half life as well as differences between subjects when exposed to UV rays or exposed via assay methods and laboratory practices.

As Holick’s work went viral, it quickly become widely believed that many Americans weren’t getting enough vitamin D, raising risks from heart disease to cancer. Yet VITAL’s large clinical trial concluded otherwise – noting 2,000 IU daily doses did not decrease cancer cases, inflammation such as rheumatoid arthritis, falls cognitive function issues or atrial fibrillation rates among subjects in either group compared with controls; Manson says these findings “were quite shocking,” prompting much discussion over what’s going on with vitamin D and how science operates.”

Vitamin E

Vitamin E is a fat-soluble antioxidant, providing hydrogen atoms to free radicals through donations. It can be found in many foods, particularly vegetable oils (sunflower, corn and soybean) as well as nuts (almonds and hazelnuts), seeds (sunflower) fruits vegetables and fortified cereals. Supplements also exist such as RRR-alpha-tocopherol and all-rac-alpha-tocopheryl acetate as natural alternatives or packaged within multivitamin supplements.

HOPE-TOO was a large randomized trial which concluded that supplementation of 400 International Units per Day (equivalent to 180 mg RRR-alpha-tocopheryl dl-acetate) did not significantly decrease heart attacks, strokes or other cardiovascular events in people with established disease as compared to placebo [23]. Conversely, The Women’s Health Study showed that high doses of natural vitamin E supplements (600 International Units daily or equivalent 342 mg of RRR-alpha-tocopherol) increased risks associated with prostate cancer among men as opposed to placebo [24].

One small study with patients suffering from end-stage renal failure demonstrated that administering high doses of vitamin E (up to 800 IU per day of all-rac-alpha-tocopheryl) significantly reduced urinary excretion of toxic forms of uric acid.

Vitamin K

Multivitamins can help ensure that you receive all of the nutrients your body requires, but they shouldn’t replace a healthy diet rich in fruits, vegetables, lean proteins and whole grains which contain synergistic combinations of essential vitamins and minerals for optimum health.

Vitamin K is an essential lipid-soluble vitamin with multiple functions in blood clotting and calcium binding in bones and other tissues. Phylloquinone (Vitamin K1) is the main form of Vitamin K consumed through diet; its main sources include green leafy vegetables. Commercial hydrogenation of phylloquinone-rich oils produces 2′,3′-dihydrophylloquinone (dK), which may also be found in some prepared foods and dietary supplements.

Large-scale supplementation trials will need to be conducted in order to establish whether dK can decrease cardiovascular events like myocardial infarction and stroke, but for now the Institute of Medicine continues recommending that men and women consume 80 mg/day of dK supplementation.

Vitamin B2

Vitamin B2, commonly referred to as riboflavin, is an essential nutrient essential for breaking down food components and absorbing energy from them. It plays an essential role in supporting nerves, muscles and eyes as well as turning carbohydrates into ATP energy fuel for your body’s needs. Vitamin B2 may even help prevent cataracts or migraine headaches!

As one of eight B-complex vitamins, riboflavin helps convert carbohydrates eaten to energy for use by the body and also releases energy from proteins. Riboflavin can be found in eggs, nuts, dairy products, meats, broccoli, brewer’s yeast breads or cereals and whole grain/enriched breads and cereals. A deficiency may cause mouth and tongue sores, swelling of lips/mouth, anemia and skin issues; more frequent in alcoholics or those living with diabetes mellitus or inflammatory bowel disease.

Vitamin B3

The eight B vitamins known collectively as the B-complex group are essential for several metabolic functions, particularly energy conversion. Niacin or nicotinamide is necessary to convert carbohydrates to fuel for our bodies while using fats and proteins efficiently as well as producing sexual hormones to reduce stress levels.

Niacin deficiency is a prevalent issue in some developing nations and can result in pellagra, which manifests with symptoms such as diarrhoea, dermatitis, thickening of skin and tongue thickness, dementia, depression and lesions on Casal’s necklace on lower neck area. Niacin can be found in a range of foods as an additive or as dietary supplements and has also been used successfully to treat peptic ulcers, high cholesterol/triglycerides/liver disease/Raynaud syndrome syndrome.

Vitamin B5

As with the other B vitamins, Vitamin B5 (also referred to as Pantothenate) can be found in foods like lean meats, fresh vegetables and unrefined grains; supplements containing it often come bundled as part of a B complex formulation.

Vitamin B5 is an essential water-soluble vitamin essential to cell function. It plays an integral part in breaking down fats into energy for our cells to use as fuel, and is an integral component in producing coenzyme A which facilitates many chemical reactions.

Vitamin B5 can help lower triglyceride and LDL cholesterol levels, thereby decreasing heart disease risk. However, high doses are generally not safe and may lead to diarrhea in some individuals; thus requiring medical supervision when supplementation. Furthermore, too much Vitamin B5 could interfere with some medications as well.

Vitamin B6

Vitamin B6 (pyridoxine) can be found in foods such as poultry, fish, potatoes, bananas and fortified cereals; supplements are also available. The active form, pyridoxal 5′-phosphate or PLP, plays an integral part in over 100 enzyme reactions such as amino acid metabolism, neurotransmitter production and red blood cell formation as well as immune system support functions.

Studies indicate that adequate levels of vitamin B6 may lower the risk of certain cancers. One large prospective study discovered that women consuming higher quantities of supplement vitamin B6 experienced lower rates of colorectal cancer than those ingesting less vitamin B6 supplements.

Other studies have demonstrated that supplementing vitamin B6 can significantly help alleviate premenstrual syndrome symptoms, including mood symptoms. More research should be conducted; some experimental research indicates it could also decrease your risk for calcium oxalate kidney stones.

Vitamin B7

Vitamin B7, commonly referred to as Biotin, is one of the water-soluble B vitamins. It plays an essential role in enzyme synthesis for several key metabolic processes including breaking down fats and carbohydrates for energy use and turning amino acids into proteins; additionally it supports healthy hair, skin and nails in our bodies.

Vitamin B7 deficiency is relatively uncommon in the US but symptoms include an inflamed and painful tongue, weight loss, fatigue and muscle pain, hair thinning and changes to nail appearance. Biotin can be found in foods such as walnuts, eggs, whole grains, salmon, cauliflower and raspberries.

As with any nutritional supplement, please check with a medical provider prior to taking biotin supplements or any other dietary supplements. Overdosing on any nutrient can be harmful and mask other health concerns; Access Medical Laboratory offers urine tests specifically to check biotin levels.