B Natural Vitamins Article
... growth. This multi-vitamin is the ultimate in hair restoration and maintenance. The assortment of vitamins is selected specifically to affect an aspect of hair growth and general healthiness. Vitamin supplements should be a part of most of our daily routines along with eating better quality foods an ...
... growth. This multi-vitamin is the ultimate in hair restoration and maintenance. The assortment of vitamins is selected specifically to affect an aspect of hair growth and general healthiness. Vitamin supplements should be a part of most of our daily routines along with eating better quality foods an ...
March 21,200O Food and Drug Administration
... protection of red blood cells and cell membranes. Vitamin C, a powerful antioxidant, also prevents free radical damageat the cellular level and promotes a healthy immune system. Selenium 200mcg Plus Vitamin C and Bioflavonoids (Rexall): [It] helps promote cell repair in the lungs and other organs. S ...
... protection of red blood cells and cell membranes. Vitamin C, a powerful antioxidant, also prevents free radical damageat the cellular level and promotes a healthy immune system. Selenium 200mcg Plus Vitamin C and Bioflavonoids (Rexall): [It] helps promote cell repair in the lungs and other organs. S ...
Antioxidant
An antioxidant is a molecule that inhibits the oxidation of other molecules. Oxidation is a chemical reaction involving the loss of electrons or an increase in oxidation state. Oxidation reactions can produce free radicals. In turn, these radicals can start chain reactions. When the chain reaction occurs in a cell, it can cause damage or death to the cell. Antioxidants terminate these chain reactions by removing free radical intermediates, and inhibit other oxidation reactions. They do this by being oxidized themselves, so antioxidants are often reducing agents such as thiols, ascorbic acid (vitamin C), or polyphenols.Although oxidation reactions are crucial for life, they can also be damaging; plants and animals maintain complex systems of multiple types of antioxidants, such as glutathione, vitamin C, vitamin A, and vitamin E as well as enzymes such as catalase, superoxide dismutase and various peroxidases. Insufficient levels of antioxidants, or inhibition of the antioxidant enzymes, cause oxidative stress and may damage or kill cells. Oxidative stress is damage to cell structure and cell function by overly reactive oxygen-containing molecules and chronic excessive inflammation. Oxidative stress seems to play a significant role in many human diseases, including cancers. The use of antioxidants in pharmacology is intensively studied, particularly as treatments for stroke and neurodegenerative diseases. For these reasons, oxidative stress can be considered to be both the cause and the consequence of some diseases.Antioxidants are widely used in dietary supplements and have been investigated for the prevention of diseases such as cancer, coronary heart disease and altitude sickness. Although initial studies suggested that antioxidant supplements might promote health, later large trials including of beta-carotene, vitamin A, and vitamin E singly or in different combinations suggest that supplementation has no effect on mortality or possibly increases it. Randomized trials of taking antioxidants including beta carotene, vitamin E, vitamin C and selenium have shown no effect on cancer risk or have increased cancer risk. Supplementation with selenium or vitamin E does not reduce the risk of cardiovascular disease.Antioxidants also have many industrial uses, such as preservatives in food and cosmetics and to prevent the degradation of rubber and gasoline.