Plant Compounds May Protect Against Certain Types of Cancer:




Grapes contain high levels of beneficial plant compounds, which may help protect against certain types of cancer (6).

Resveratrol, one of the compounds found in this fruit, has been well-studied in terms of cancer prevention and treatment.

It has been shown to protect against cancer by reducing inflammation, acting as an antioxidant and blocking the growth and spread of cancer cells within the body (10).

However, the unique combination of plant compounds found in grapes may be responsible for their anti-cancer benefits. In addition to resveratrol, grapes also contain quercetin, anthocyanins and catechins — all of which may have beneficial effects against cancer (11).

Grape extracts have been shown to block the growth and spread of human colon cancer cells in test-tube studies (12, 13).




Additionally, one study in 30 people over the age of 50 showed that eating 1 pound (450 grams) of grapes per day for two weeks decreased markers of colon cancer risk (14).

Studies have also found that grape extracts block the growth and spread of breast cancer cells, both in laboratory and mouse models (15, 16, 17).

While studies on grapes and cancer in humans are limited, a diet high in antioxidant-rich foods, such as grapes, has been linked to a lower risk of cancer (18).

SUMMARY
Grapes contain many beneficial plant compounds, such as resveratrol, that may protect against various types of cancer, including colon cancer and breast cancer.
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4. Beneficial for Heart Health in Various Impressive Ways
There are several reasons why eating grapes is good for your heart.

May Help Lower Blood Pressure
One cup (151 grams) of grapes contains 288 mg of potassium, which is 6% of the RDI (1).

This mineral is necessary for maintaining healthy blood pressure levels.

Low intake of potassium has been linked to increased risks of high blood pressure, heart disease and stroke (19).

A study in 12,267 adults showed that people who consumed higher levels of potassium in relation to sodium were less likely to die from heart diseases than those who consumed less potassium (20).

May Help Reduce Cholesterol
Compounds found in grapes may help protect against high cholesterol levels by decreasing cholesterol absorption (21).

In one study in 69 people with high cholesterol, eating three cups (500 grams) of red grapes a day for eight weeks was shown to lower total and “bad” LDL cholesterol. White grapes did not have the same effect (22).

Additionally, diets high in resveratrol, such as the Mediterranean diet, have been shown to decrease cholesterol levels as well (23).

SUMMARY
Compounds in grapes and red wine may protect against heart disease. Grapes may help lower blood pressure and cholesterol.
5. May Decrease Blood Sugar Levels and Protect Against Diabetes
Grapes contain 23 grams of sugar per cup (151 grams), which may make you wonder if they’re a good choice for people with diabetes (1).

They have a low glycemic index (GI) of 53, a measure of how quickly a food raises blood sugar.

Furthermore, compounds found in grapes may even decrease blood sugar levels. In a 16-week study in 38 men, those who took 20 grams of grape extract per day experienced decreased blood sugar levels, compared to a control group (24).

Additionally, resveratrol has been shown to increase insulin sensitivity, which may improve your body’s ability to use glucose and hence lower blood sugar levels (25).

Resveratrol also increases the number of glucose receptors on cell membranes, which may have a beneficial effect on blood sugar (26).

Managing your blood sugar levels over time is an important factor in reducing your risk of diabetes.

SUMMARY
Though grapes are high in sugar, they have a low glycemic index. Additionally, compounds in grapes may protect against high blood sugar.

6. Contain Several Compounds That Benefit Eye Health
The plant chemicals found in grapes may protect against common eye diseases.

In one study, mice fed a diet supplemented with grapes showed fewer signs of damage to the retina and had better retinal function compared with mice who were not fed the fruit (27).

In a test-tube study, resveratrol was found to protect retinal cells in the human eye from ultraviolet A light. This may lower the risk of developing age-related macular degeneration (AMD), a common eye disease (28).

According to a review study, resveratrol may also help protect against glaucoma, cataract and diabetic eye disease (29).

Additionally, grapes contain the antioxidants lutein and zeaxanthin. Several studies have demonstrated that these compounds help protect the eyes from damage from blue light (30).

SUMMARY
Grapes contain several compounds, such as resveratrol, lutein and zeaxanthin, that may protect against common eye diseases, including age-related macular degeneration, cataracts and glaucoma....

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