Diuretic because of its richness in water and potassium (250 mg / 100 g), the grape drains the liver and makes the kidneys work. Ripe at the beginning of September, it is perfect to cleanse and purify the body before the fall. Even if the cures of grapes remain in fashion, do not make more than one day of monodiète: 2 kilos of grapes per day divided in 6 taken, that is to say every 3 hours approximately.

"Beyond 24 hours, it's a heresy! "Says Dr. Jean-Michel Lecerf, director of the nutrition department of the Pasteur Institute of Lille. Without balanced nutrient inputs, especially protein, the body fatigue and alter its natural detoxification capabilities.

Grape, a shield against breast cancer

Grapes are a mine of powerful antioxidants. A 100 g cluster provides 100 mg. One of these protective compounds, resveratrol, has been the subject of many scientific studies. "It seems to be acting at every stage of a healthy cell's transformation into a cancer cell," says Dr. David Khayat, an oncologist who authored The Real Anti-Cancer Diet (Ed Odile Jacob). It inhibits its ability to proliferate and its ability to expand. These virtues have been confirmed in experimental models of breast cancer , but also of the skin, colon and pancreas.

Black grapes or white grapes?

All grapes contain antioxidants but blacks have more. They are among the fruits best filled with polyphenols, after pomegranate and khaki. Their pretty purplish color is also due to the presence of anthocyanins, notorious anti-cancer pigments. This is why red wine is five to ten times more antioxidant than white wine . Not all varieties are so well endowed. Gamay and Pinot Noir win, especially in resveratrol.

As for the fine white film that sometimes covers grains, it is neither a grape disease nor an accumulation of pesticide residues. Entirely natural, it is generated by the fruit itself to protect from the sun in summer. This "pruine", as the specialists call it, is synonymous with freshness. It also indicates that the clusters have been little manipulated. It is therefore a guarantee of quality. Do not remove it immediately if you plan to keep your grapes for a few days (in the central part of the refrigerator). But after, scrupulously wash the grains before eating them because the grapes are among the most processed crops.

Consumed dry, it strengthens bone capital

Raisins have nothing to envy to fresh grapes. They are certainly four times more caloric (267 Kcal / 100 g) but they bring as many benefits. They even have some additional advantages: their fibers are better tolerated and their grains contain a higher content of boron (2.2 mg / 100 g), a trace element that removes the spectrum of osteoarthritis and osteoporosis. Boron promotes the absorption of calcium and thus avoids the risk of bone demineralization. Making homemade raisins is not difficult: let them dry in the oven at thermostat 2 (60 ° C) for a good two hours.