Grape seed extract is an industrial derivative of grape seeds. It is rich in antioxidants and oligomeric proanthocyanidin complexes and has been linked to a wide range of possible health benefits.
These include the treatment of conditions such as high cholesterol, atherosclerosis, muscular degeneration, poor circulation, and nerve damage.
Grape seed extract is available as a dietary supplement in a liquid gel form.
This article provides details on the benefits of grape seed extract as well as side effects and precautions associated with its use.
Fast facts on grape seed extract
Here are some key points about grape seed extract:
Grape seed extract may have a range of health benefits.
Studies on animal models have revealed that grape seed extract can be effective in treating heart disease.
Some experts think that grape seed extract could even have anticancer and cancer chemo preventive potential. Over recent years, there has been a great deal of research pointing to possible therapeutic properties of grape seed extract. Listed below are some of the key findings.
1) Healing wounds
Grape seed extract has the potential to increase the speed that wounds heal. A study, published in the journal Free Radical Biology and Medicine, applied proanthocyanidin extract onto wounds on the backs of mice. They found that the mice treated with this solution had quicker healing times.
According to the researchers they "provided firm evidence to support that topical application of GSPE [Grape seed proanthocyanidin extract] represents a feasible and productive approach to support dermal wound healing."
Although it is not clear how this protection occurs, GSPE was found to increase production of vascular endothelial growth factor, a compound important in the wound healing process.
2) Improving bone strength
Including grape seed extract in your diet with calcium has a "beneficial effect on bone formationand bone strength for the treatment of bone debility caused by a low level of calcium."
This is according to a study published in the Journal of Musculoskeletal & Neuronal Interactionsthat investigated the effects of calcium and proanthocyanidins on the bone structure of mice which had been fed a low-calcium diet.
3) Anti-Candida activity
A study conducted in Italy examined grape seed extract's ability to attack Candida, a yeast-like parasitic fungus that can, sometimes, cause thrush. Grape seed oil contains flavan-3-ols.
The researchers concluded:
"The results pointed out a significant inhibition of Candida albicans load 5 days after challenge. These findings indicate that grape seed extracts with high content of polymeric flavan-3-ols can be used in mucosal infection such as vaginal candidiasis."
4) Preventing skin cancer
Grape seeds contain proanthocyanidins which might prevent the development of cancer. A study, published in the journal Molecular Nutrition & Food Research, found that grape seeds have properties that can reduce the severity of skin cancer.
Using hairless mice, the research team tested the ability of grape seed proanthocyanidins to slow the formation of skin tumor development.
The researchers concluded that grape seed extracts "could be useful in the attenuation of the adverse UV-induced health effects in human skin."
It is thought that the protective nature of proanthocyanidins comes via a number of routes including a reduction in oxidative stress and immunosuppression by altering cytokine activity. Further research is needed to firm up the findings.
5) Cardiovascular benefits
The antioxidants in grape seed extract can potentially protect the blood vessels from becoming damaged, which may prevent high blood pressure.
According to one study, published in the journal Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis, "grape seed proanthocyanidin extract (GSPE) provides superior antioxidant efficacy as compared to Vitamins C, E, and β-carotene."
The National Center for Complementary and Integrative Health (NCCIH) note that it may help reduce systolic blood pressure and heart rate, but they point out that it will not help decrease lipid levels, for example, cholesterol, in the blood.
6) Preventing cognitive decline
Grape seed extract is very high in proanthocyanidins which some believe could prevent cognitive decline.
One study identified "a critical role for grape seed proanthocyanidin extract (GSPE) as a neuroprotectant in the hippocampus and in preventing cognitive loss with aging."
The NCCIH is supporting studies on the effect of grape seed extract on Alzheimer's disease.
7) Other possible benefits
Other possible benefits associated with grape seed extract include:
treating tooth decay
protecting against pathogens
improving night vision
treating diabetic retinopathy and improving blood sugar control
relieving symptoms of chronic venous insufficiency
anti-aging properties (protecting collagenand elastin)
relieving symptoms of chronic venous insufficiency
reducing iron levels in people with hemochromatosis
Estrogen plays a substantial role in breast cancer. Some animal studies inferred that grape seed extract might work to alter estrogen levels.
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Other benefits includes the following:
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Defends against free radical damage linked to many health issues.
Supports improved cardiovascular function with anthocyanins.
Aids digestion through essential fatty acids.
Increases metabolism to assist healthy weight loss.
Credits: https://www.medicalnewstoday.com/articles/263332.php (Joseph Nordqvist)