Vitamin A: Vision and a strong immune system: Vitamin A is important for maintaining good vision and is also known as the “anti-infective” vitamin because of its role in supporting activities of the immune system  .
Vitamin C: Healthy aging Vitamin C is a potent antioxidant that serves a protective role in the body by neutralizing free radicals that want to attack healthy cells and has even been shown through research to help slow signs of aging  .  - making it an essential building block for good nutrition  . A recent study from Stanford University showed that Vitamin C is also anti-estrogenic, further promoting the regulation of test levels  .
Vitamin D3: Strong bones and muscles Vitamin D becomes even more important with age, because it's needed to absorb calcium.
Vitamin E: Optimal brain health A study published in the 'Journal of the American Medical Association' found that people with mild to moderate Alzheimer's disease who took high-dose vitamin E supplements had significantly slower mental decline than patients given a placebo  . Lead study author Dr. Maurice Dysken says vitamin E probably helped slow the progression of Alzheimer's because it's an antioxidant. Other studies have shown that the vitamin protects nerve cells in the brain by combating free radical damage  .
Vitamin K: Life extension and longevity Research confirmed that ample vitamin K intake can indeed help you live longer  . A multitude of studies now point to the fact that adequate vitamin K intake, including supplementation, can offer prevention against atherosclerosis, osteoporosis, diabetes, and cancer       .
Vitamin B1: Natural energy Vitamin B1, also called thiamine or thiamin, is one of 8 B vitamins that works to help the body convert food (carbohydrates) into fuel (glucose), which the body uses to produce energy  . These B vitamins, often referred to as B-complex vitamins, also help the body metabolize fats and protein. B-complex vitamins are needed for a healthy liver, skin, hair, and eyes. They also help the nervous system function properly and are needed for good brain function  .
Riboflavin (Vitamin B2): Metabolism boost Vitamin B2, also called Riboflavin, is an important vitamin that also acts as an antioxidant within the body. Vitamin B2 is responsible for maintaining healthy blood cells, helping to boost energy levels, facilitating in a healthy metabolism, preventing free radical damage, contributing to growth, protecting skin and eye health  .
Vitamin B3: Balanced cholesterol levels Niacin is an important vitamin for maintaining a healthy cardiovascular system and metabolism- especially balancing blood cholesterol levels. In addition niacin helps with brain function, healthy skin formation and maintenance, and even preventing or treating diabetes  .
Vitamin B6: Mood enhancement Vitamin B6 helps the body to maintain a healthy nervous system, to make hemoglobin that carries oxygen in red blood cells throughout the body, to provide energy from the food that we eat, to balance blood sugar levels, to act as a natural pain treatment, to boost mood, and also to create antibodies that our immune system uses to protect us     .
Vitamin B12: Healthy nervous system Older men, in particular, may have an increased need for this B vitamin, which boosts brain health. Vitamin B12 supports the normal functioning of the nervous system, including memory  .
Biotin: Hair loss prevention The B vitamins, including biotin, are a group of nutrients that work together to metabolize carbohydrates, proteins and fats. Biotin goes above its metabolic role and keeps your skin, nails and hair healthy. High-dose biotin supplements are often targeted toward men to improve hair structure and minimize hair loss  .
Calcium: Hormone health Calcium is required for vascular contraction and vasodilation, muscle function, nerve transmission, intracellular signaling and hormonal secretion  .
Folate: Heart health Folate, or folic acid, is one of the important B vitamins. Folate may help protect men from heart disease because it prevents the buildup of homocysteine, a substance that your body needs to build protein but that can lead to heart and blood vessel disease if produced in excess  .