One September study in Critical Reviews in Food Science and Nutrition found that grapes have strong antioxidant activity, stymieing the proliferation of cancer cells and suppressing the clustering of platelets, while also reducing cholesterol levels. Overall, evidence has associated grape consumption with lowered risk of certain chronic diseases including cardiovascular disease. Another study from January in the Journal of Medicinal Food , with a small sample size of 85 individuals, found that grape juice benefits immunity in healthy, middle-aged human subjects.
The study tested whether grape juice alters the function of gamma delta T cells — which are important in immune surveillance — and found that it did. The gamma delta T-cell level, as well as the vitamin C levels in those who consumed grape juice increased. As little as half a cup of grape juice can yield benefits. The high levels of vitamin C can help in immune system functioning and stave off disease. Furthermore, grapes are a good source of vitamin K and carbohydrates in the form of simple sugars, says the California Department of Public Health.
Despite, their nutrient-rich content, there are grape juice side effects. According to MedlinePlus , eating large quantities of grapes may cause diarrhea. In contrast, their placebo-receiving counterparts had a decline in the ability to make new memories 5. Such studies prove that resveratrol-containing grape juice can be an excellent brain tonic. One of the major causes of diabetes mellitus is oxidative stress.
Consuming Concord grape juice may reduce insulin resistance. It contains anthocyanins, proanthocyanidins, flavonols, phenolic acids, and resveratrol. All of these are potent antioxidants 6. They eliminate free radicals that cause inflammation of insulin-secreting pancreatic cells. The grape polyphenols work on impaired glucose tolerance in tissues 6. This is supposed to be the initial stage of diabetes. Over three months, positive changes in their fasting glucose concentration were observed.
The HbA1c level which is a blood sugar level indicator was also within the normal range 7. However, you need to watch out for added sugar in packed grape juices. Added sugars can drastically reduce the benefits of having the juice. A study conducted in Korea showed the effects of regular grape intake on DNA. Healthy participants had reduced levels of oxidative DNA damage in immune system cells.
Grape juice also increased the plasma antioxidant capacity in them 8. Grape phytochemicals were found to be effective in killing colon cancer cells. How they selectively work on cancer cells is still being studied. However, there was a drop in the incidence of tumors in rats fed with grape extracts 9. Administering flavonoid-rich grape juice can manage chemotherapy-induced nausea, vomiting, and other side effects.
The results of these studies turned out to be inconclusive. But with more supporting data, drinks like grape juice can be considered a cheaper alternative to chemotherapy adjuncts Prostate cancer and related issues are a leading cause of low quality of life and mortality in men. Laboratory studies demonstrate the anticancer properties of grape juice and wine on prostate cancer cells Muscadine grape extracts have been studied extensively for their prostate-protective properties. Evidence supports the selective apoptosis programmed cell death of prostate cancer cells triggered by grape anthocyanins.
Surprisingly, healthy cells remain unaffected Adding grapes to your diet with high-fat foods changes your gut microbial environment drastically. Despite having limited absorption and digestion, grape polyphenols protect your gut against pathogens, oxidative stress, and inflammation The grape polyphenols in grape juice may control weight gain and glucose intolerance.
Grape polyphenols also promote gut barrier integrity. They promote the growth of helpful intestinal bacteria like Akkermansia muciniphila. This can enhance digestion and assimilation According to mice studies, grape extracts can protect you from pathogenic gut infections, metabolic disorders, and obesity The resveratrol in grape juice prevents the reproduction and spread of the influenza virus. It seems to block host cell functions that are vital for viral replication It interferes with the manufacture of proteins made in the viral replication process.
More importantly, there have been no reports of toxicity The acidic-neutral pH of grape juice also helps prevent viral infections. Commercial grape juice was found to inactivate various enteric viruses and herpes simplex virus HSV.
Moreover, grape juice treatment showed a 1,fold reduction in poliovirus infectivity Moderate doses of red grape juice or wine may help you burn fat. White grape seed flour was found to be more effective in managing obesity and metabolic diseases like fatty liver Vascular Pharmacology.
Blumberg JB, et al. Concord grape juice polyphenols and cardiovascular risk factors: Dose-response relationships. Sans-Buenhombre M, et al. Bioavailability and the mechanism of action of a grape extract rich in polyphenols in cholesterol homeostasis.
Journal of Functional Foods. Slavin JL, et al. Health benefits of fruits and vegetables. Advances in Nutrition. Moreno-Arribas MV, et al. Lee D-H, et al. Effect of alcohol-free red wine concentrates on cholesterolhomeostasis: An in vitro and in vivo study. Process Biochemistry. Noguer MA, et al. Intake of alcohol-free red wine modulates antioxidant enzyme activities in a human intervention study.
Pharmacological Research. Greyling A, et al. Effects of wine and grape polyphenols on blood pressure, endothelial function and sympathetic nervous system activity in treated hypertensive subjects. See also MIND diet may cut Alzheimer's risk 3 diet changes women over 50 should make right now 3 key changes in the new Nutrition Facts label Healthy-eating habits Reduce sugar in your diet Acai berries Added sugar Alcohol use Alkaline water Are energy drinks bull?
Artificial sweeteners and other sugar substitutes Autism spectrum disorder and digestive symptoms Bad food habits at work? Get back on track in 5 steps Best oil for cooking? Grape juice is known to soothe the inflammation caused in the joints, which could also be a sign of arthritis or osteoporosis. Being rich in polyphenols and other antioxidants, it helps in improving flexibility and mobility of the joints in the knees and other body parts.
Drinking its juice can be beneficial for the health of your joints and keep them in good condition for a longer duration. Does every day routine, office work or a gym session make you feel tired? It could be because of lack of electrolytes, nutrients and iron in the body. Try drinking a glass of grape juice regularly to combat the problem of tiredness and fatigue.
It instantly energizes you by replenishing the iron content in the body and even give a boost to the immune system. With regular dose of grapes, you can even prolong the risk of contracting muscular degeneration. Red grapes have solid antibacterial and antiviral properties that can shield you from various infections.
They show solid antiviral properties against the poliovirus and the herpes simplex virus. Studies have additionally demonstrated that grape juice can handle bacterial contaminations in the gut and different frameworks. The main reason for fluctuation in blood pressure is attributed to low potassium level in the body. Grapes are a rich source of potassium and hence are recommended for those who suffer from it. Having it whole or its juice will help negate this health problem by bringing it to a normal level and in the long run lower the risk of contracting cardiovascular or heart related diseases and ailments.
Enriched with natural minerals and antioxidants make grapes a fruit to look for if weight management is on your mind. Black grapes are low in calorie and 1 cup serving of them contain only 62 calories, which means they are a great fruit to snack upon between meals.
They also have great amount of dietary fibre in them which help keep the metabolism active, regulate bowel movements and keep the digestive tract clean and clear. You can consume juicy and plump grapes at any time of the day. However, their quantity needs to be restricted as they are high in sugar level and can lead to weight gain or increase blood sugar levels among diabetic people.
Here is how you can enjoy the seasonal fruit in various ways and remain healthy. Snacks- A low calorie snack it can be had in the breakfast as an addition to your oats or cereal, in the evening before dinner or as a dessert post dinner.
However, restrict the quantity as too much of it can have a reverse effect on your health. The fruit also goes well with cheese and can be had as a party snack. Desserts- The natural sweetness of grapes make them an ideal choice for dessert. Green grape popsicles or solidified grape pops are a sound option for healthy treat post meal. Other Uses of Grapes- Grapes are famous for its various uses in medicines and in the making of wine, beverages and other types of foods like jams, chutneys etc.
Grapes seed oil is rich in antioxidants, which keeps skin and hair healthy. It is generally used in cosmetic products like face cream and night serum.
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