Antioxidants are compounds that can help protect cells from damage caused by free radicals. Examples of antioxidants include vitamins C and E, selenium, and carotenoids such as beta-carotene, lycopene, lutein, and zeaxanthin. Three of the main antioxidant vitamins are beta-carotene, vitamin C, and vitamin E. These vitamins can be found in colorful fruits and vegetables, especially those with purple, blue, red, orange, and yellow tones. A diet rich in fruits and vegetables is beneficial for protecting against disease.
Plant-based foods are the best sources of antioxidants, including fruits, vegetables, whole grains, nuts, seeds, herbs and spices, and even cocoa. Eating a diet with lots of vegetables and fruits is healthy and reduces the risk of certain diseases. Vitamin A is an antioxidant that helps protect cells from damage caused by free radicals. Vitamin C is an antioxidant that helps protect cells from damage caused by free radicals. Vitamin E is an antioxidant that helps protect cells from damage caused by free radicals.
Other natural antioxidants include flavonoids, tannins, phenols, and lignans. Vitamin K is an antioxidant that helps protect cells from damage caused by free radicals. Vitamin D is an antioxidant that helps protect cells from damage caused by free radicals. Niacin is an antioxidant that helps protect cells from damage caused by free radicals. Pyridoxine is an antioxidant that helps protect cells from damage caused by free radicals.
Riboflavin is an antioxidant that helps protect cells from damage caused by free radicals. Biotin is an antioxidant that helps protect cells from damage caused by free radicals. Biotin was formerly known as coenzyme R, vitamin H or vitamin B7. It is a fat-soluble vitamin found in vegetable oils, nuts, seeds, wheat germ, and leafy green vegetables. Vitamin B2 recycles glutathione which is the most important antioxidant that protects against free radicals in the body. Vitamin B12 is essential for the maturation of erythrocytes during the production of red blood cells and for maintaining cardiovascular health by preventing an increase in homocysteine levels. Dietary sources of vitamin B12 include sardines, salmon, tuna, cod, lamb, scallops, shrimp, beef, yogurt, cow's milk, eggs, turkey, chicken, cheese, mushrooms and breakfast cereals. Other compounds in dietary foods such as plant phytochemicals are thought to have greater antioxidant effects than vitamins or minerals.
This review evaluates studies that have investigated the antioxidant properties of these vitamins and their effect on oxidative stress. In conclusion, vitamins are essential for a healthy metabolism and possess antioxidant properties which can help protect cells from damage caused by free radicals. Eating a diet rich in fruits and vegetables is beneficial for protecting against disease as it provides a source of antioxidants. Plant-based foods are the best sources of antioxidants including fruits, vegetables, whole grains, nuts, seeds herbs and spices and even cocoa.
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