What are antioxidants?
The cells in your body are exposed to oxygen every day. Oxygen is important for your body’s health, but exposure to oxygen also causes oxidation. In oxidation, body chemicals are altered and become what are known as free radicals. Exposure to environmental factors, such as sun exposure, cigarette smoke, alcohol and pollution, also creates free radicals.
Over time, free radicals can cause a chain reaction in your body that damages important body chemicals, DNA and parts of your cells. Some cells can heal, while others are permanently damaged. Scientists believe free radicals may contribute to the aging process as well as diseases like cancer, diabetes and heart disease.
Antioxidants are natural substances that may stop or limit the damage caused by free radicals. Your body uses antioxidants to stabilize the free radicals. This keeps them from causing damage to other cells. Antioxidants can protect and reverse the damage caused by oxidation to some extent.
Where are antioxidants found?
Your body produces some antioxidants to fight off the free radicals formed by normal body processes. Your body can also get antioxidants by eating a healthy diet. Examples of antioxidant-rich foods include fruits and vegetables that are high in nutrients such as vitamins A, C and E, beta-carotene, lutein, lycopene and selenium.
What foods are good sources of antioxidants?
To get the most antioxidants, eat a diet that includes a healthy mix of colorful fruits and vegetables and other antioxidant-rich foods:
- Vitamin A is found in milk, liver, butter and eggs.
- Vitamin C is found in most fruits and vegetables. Those with the highest amounts of vitamin C include papayas, strawberries, oranges, cantaloupe and kiwi, as well as bell peppers, broccoli, Brussels sprouts, tomatoes, cauliflower and kale.
- Vitamin E is found in some nuts and seeds, including almonds, sunflower seeds, hazelnuts and peanuts. It can also be found in green leafy vegetables, such as spinach and kale, and in oils, such as soybean, sunflower, corn and canola oils.
- Beta-carotene is found in colorful fruits and vegetables, including carrots, peas, cantaloupe, apricots, papayas, mangoes, peaches, pumpkin, apricots, broccoli, sweet potatoes and squash. It can also be found in some leafy green vegetables, including beet greens, spinach and kale.
- Lutein is found in green leafy vegetables, such as spinach, collards and kale, broccoli, corn, peas, papayas and oranges.
- Lycopene is found in pink and red fruits and vegetables, such as pink grapefruit, watermelon, apricots and tomatoes.
- Selenium is found in cereals (corn, wheat and rice), nuts, legumes, animal products (beef, fish, turkey, chicken, eggs and cheese), bread and pasta.
While foods that are rich in vitamin E and beta-carotene are very healthy and help reduce cancer risk, the U.S. Preventive Services Task Force and the American Academy of Family Physicians recommend against taking vitamin E or beta-carotene supplements for the prevention of cancer. People who smoke or have a high risk for lung cancer should not take supplemental beta-carotene because it can increase the risk of lung cancer.
The best way to get antioxidants is by eating a diet with lots of vegetables, fruits, whole grains, seeds and nuts. Variety is also important.
Grapes have been used by European and Middle Eastern folk healers for years for their powerful medicinal properties. Scientists have found that the grape seed has the most concentrated form of health benefits from the grape. Grape seed extracts have been shown to improve immunity and prevent cancer.
Every part of the grape plant has been used to improve health. Grapevines have been made into special ointments that were used to treat skin and eye diseases. Grape leaves were used to improve healing time of painful injuries and inflammatory conditions. Unripe grapes were classically used to help the body fend off sore throats, and dried grapes (raisins) have been used to help with constipation and healthy bowel movements.
Grape seed extract has incredible antioxidant power:
Grape seed extract has an incredible antioxidant potential with its flavonoid phytonutrients. These polyphenols include resveratrol and unique oligomeric proanthocyanidin complexes (OPC's). The most potent form is in grape seed extract, as it contains 95% OPC's, which is more than any other antioxidant extract.
OPC's help the body produce glutathione, which is the master antioxidant that protects DNA and strengthens the immune system. They also increase intracellular vitamin C levels and strengthen capillaries and thus improve blood oxygen circulation throughout the body. These antioxidants also act to protect soft tissue collagen in the joints and skin from free radical damage and premature aging.
The powerful free radical scavenging effects of grape seed extract protect the skin from UV radiation damage, the blood vessel walls from inflammatory stress and the brain from low oxygen states. Due to the benefits that grape seed extract has on these systems, it has been shown to reduce the risk of skin cancer, improve blood pressure and protect against dementia.
Grape seed extract and cancer:
Many studies have shown the benefits of grape seed extract on slowing cancer growth and initiating cancer cell death. Researchers at the University of Kentucky found that the antioxidants in grape seed extract triggered the death of 76% of exposed leukemia cells by turning on a protein known as "JNK" that regulates cancer cell pathways.
Other studies have shown that grape seed extracts help the liver to detoxify from radiation induced poisons and chemotherapy. In addition, they help the liver to detoxify bad estrogenic molecules. By helping the body eliminate these toxic substances, grape seed helps reduce the growth of breast, stomach, colon, prostate and lung cancer cells.
Grape seed extract and Th2 immunity:
The two major parts of our immune system are the Th1 and Th2 systems. It is essential that these systems are both working in a balanced and coordinated manner. Many individuals have a dominance in one of the major pathways.
According to the research of Dr. Datis Kharrazian and other health experts, the components within grape seed extract tend to improve the Th2 immune system. For most individuals, this provides a great immune boost. However, some individuals have a strong Th2 dominance and anything that increases Th2 activity (which also inhibits Th1 immunity) would create a further immune imbalance and could drive further inflammatory conditions.
It is advisable for individuals with Th2 dominant conditions to do a supplement challenge where they intentionally see how their body responds to grape seed extract or another Th2 stimulating compound before they use it indiscretionarily. If it is shown through a cytokine blood test or through a supplement challenge that they have a Th2 dominance, and its works great.
