Vitamins are vital organic compounds required by an organism for healthy survival, which cannot be synthesized by the organism itself, in sufficient quantities. Thus, for men or women, vitamins are extremely important that need to be taken in from external sources, such as buy USANA products.

The best way to ensure regular and sufficient vitamin intake is by having a balanced diet of a variety of food types. In fact, till the 1900s, this was the only way man could make sure of all the vitamins getting into his body. However, with the modern busy lifestyles that most people live nowadays, healthy food has taken a backseat. To counter this, lots of vitamin supplements in the form of capsules, tablets, liquids etc. have come up that. When used wisely, can be used to supplement your daily diet which can go a long way in keeping your body healthy and disease-free.

Let’s discuss some of the important vitamins and its benefits on human health:

List of Essential Vitamins & its Benefits on Human Health

  1. Vitamin A

Vitamin A is fat-soluble vitamin that preserves the good condition of the eyes. If the body suffers in the levels of vitamin A, various health issues may occur. For the body to have normal cell growth and remain healthy, it is essential that the body secure its regular quantities of vitamin A everyday.

The best source of vitamin A is carrots or consume USANA Cellsentials Set.

Vitamin A is also called as retinol, which plays a crucial role in many essential body functions that include vision, immune function, bone metabolism, skin health, antioxidant activity, hematopoiesis, embryonic development & reproduction, skeletal growth, and gene transcription.

One common symptom of vitamin A deficiency is night blindness or the inability to see in the dark. Other symptoms include shriveling, cornea ulceration, itchiness, irritation, lack of appetite, dry & rough skin, poor wound healing, sensitive gums & teeth, and even Bigot’s spots. A person with Bigot’s spots is seen with small floating gray portions in the eye’s white area.

  1. Vitamin B1

Vitamin B1 is one of the eight B vitamins. It is also known as thiamin or thiamine. This vitamin aids the body to convert carbohydrates into glucose or fuel that is used to create energy. It is a B complex vitamin that aids the body to metabolize protein and fats.

B complex vitamins are essentials for healthy liver, eyes, hair, and skin. You can also use Celavive USANA Serum for best skincare treatment at home.

Thiamine is contained in both animals and plants. It plays an important role in some metabolic reactions. It is needed by the body to produce adenosine triphosphate or ATP, which is used by each cell in the body for energy. Deficiency in thiamine is very rare however, alcoholics are considered to be deficient of this vitamin.

People undergoing kidney dialysis and with anorexia, and Cohn’s disease are also considered as deficient in thiamine level. The common symptoms of thiamine deficiency are abdominal discomfort, depression, irritability, and fatigue.

Trouble in carbohydrates digestion is also a common symptom of the deficiency. With this, a substance known as pyruvic acid is formed in the bloodstream, which causes a disease known as beriberi, heart damage, difficulty in breathing, and loss of mental alertness.

  1. Vitamin B12

Vitamin B12 is one of those water-soluble vitamins that are dissolved in water. After the body uses this vitamin, its leftover amounts are released through urination.

Just like other B vitamins, Vitamin B12 is essential for metabolism. It aids in the maintenance of the central nervous system and in the formation of red blood cells. The best food sources of Vitamin B12 are shellfish, poultry, organ meats (kidney and liver), milk & milk products, meat, fortified foods like soymilk, and eggs. Compared to plant sources, our body much better absorbs animal sources of Vitamin B12. This is because the amount of B12 in non-animal sources may vary.

Vitamin B12 deficiency happens when the body is unable to absorb the required amount of vitamin that it needs. People who are more than 50 years old lose the ability to absorb Vitamin B12 from the food they eat. Moreover, people who follow a vegan diet or do not consume dairy products or eggs may require B12 supplements in forms of multivitamins, injection, nasal gel, or in forms that can be dissolve under the tongue.

  1. Vitamin B2

Vitamin B2 is one of the eight B vitamins. It is also called as riboflavin, which aids the body to metabolize protein and fats. It also helps the nervous system of the body to function properly and are great in keeping healthy liver, eyes, hair, and skin. Just like other B vitamins, riboflavin is water-soluble and cannot be stored inside the body.

Riboflavin or vitamin B2 acts as an antioxidant by fighting particles inside the body called as free radicals. Such radicals are contributing factors to aging process and development of numerous health conditions such as cancer and heart disease. It can also damage DNA and cells. Riboflavin can fight, prevent or reduce all these radicals.

  1. Vitamin C

Vitamin C is also called as ascorbic acid. It is a miracle vitamin that is involved in numerous biological body processes. This vitamin is readily available in various foods and is highly recommended for optimum health.

According to research, people with high levels of Vitamin C in their blood have greater longevity. This is because Vitamin C deals with tear and wear of everyday living apart from its having an anti-oxidant property. These components are essential for overall boosting immunity and strengthening of tissues.

As a water-soluble vitamin, Vitamin C is essential for the daily needs of the body however cannot be stored inside the body. Since Vitamin C is cheaper and does not affect the quality of processed food, it is used in food preservation. This vitamin ensures that sufficient supply of other nutrients to the body is maintained through processed food. For vegetables and raw fruits containing Vitamin C, it should be sealed in an air-tight container and refrigerated, or consumed whenever possible.

Every 12 hours, Vitamin C is eliminated from the body, thus adequate intake of the vitamin is essential the entire day.

  1. Vitamin D

Due to various range of health disorders today, our body needs Vitamin D for protection. The importance of Vitamin D should not be ignored even if only small amount of it needs by the body.

Vitamin D comes in different physiological forms namely vitamin D3, vitamin D2, and Viz. The first two forms are also known as cholecalciferol and ergocalciferol. The synthesis of vitamin D2 is derived from organic foods while vitamin D3 synthesis is regulated by the sun.

The synthesis of Vitamin D is aided by morning sunshine. This is the reason why there is a saying that “morning sunshine is healthy and good for the body”. Moreover, Vitamin D is a fat-soluble hormone that naturally formed inside our body, thus exposure to sunshine is necessary.

Vitamin D has anti-inflammatory properties, thus supplement of this vitamin is good for inflammatory diseases such as atherosclerosis, cardiac infection, arthritis, and countless others.

According to studies, people who have suffered from cancers (ovarian and breast cancers) and cardiovascular diseases such as peripheral artery disease have low levels of Vitamin D. Moreover, USANA Celavive product also help treating different skincare problems, which are quite common during Vitamin D deficiency.

If a person’s body is deficient with Vitamin D, it is more vulnerable to cancer and heart diseases. This is the reason why health experts advise us to consume more dairy, fish, and plant foods.

  1. Vitamin K

Vitamin K is essential for blood clotting. If a person experiences delay in blood clotting and easy bleeding and bruising, he or she is suffering from Vitamin K deficiency.

Deficiency in Vitamin K is commonly caused by factors like bulimia, malnutrition, alcoholism, chronic illness, cystic fibrosis, gallbladder disease, inflammatory bowel disease, overuse of antacids and some antibiotics, liver cirrhosis or liver damage. Other possible causes are use of some drugs like cefamandole, barbiturates, and salicylates; fat mal-absorption; hepatitis; lupus; leukemia; and yeast infection.

Infants are more prone to Vitamin K deficiency compared to adults since breast milk is not consists of adequate Vitamin K. Moreover, infants are born with disinfected intestine that does not contain sufficient Vitamin K. They also have poor transmission of Vitamin K and lipids that causes vitamin deficiency. As this happens, hemorrhagic disease or internal bleeding may happen.

To treat Vitamin K deficiency, it is important to add more vitamin K foods in your diet that include green leafy vegetables such as Brussels sprouts, kale, cabbage, spinach as well as broccoli, parsley, cauliflower, and asparagus.


Whatever be your choice or mode of vitamin intake, it is important to be aware of the different kinds of vitamins and the various functions they perform. This site aims at educating the reader towards this end, besides introducing the reader to vitamin supplements and their various forms. If you’re not sure about the best company then simply join the link How to Join USANA for best products.

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Usana was founded in 1992 by Dr.Myron Wentz, USANA Health Science is a U.S.-based company that manufactures high-quality supplements, personal care, energy, and weight-management products.

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