Harness the powers of grapefruit: From immunity booster to effective weight loss aid

Grapefruits are made up of almost 90 percent water, putting them among the most hydrating fruits. These hybrids of oranges and pomelos are rich in B vitamins, including pantothenic acid, biotin, and vitamins A and C.

These citrus fruits also contain carotenoids, such as lycopene and beta-carotene, and flavonoids, such as kaempferol, quercetin, hesperidin, and naringenin. These compounds have anti-inflammatory, antioxidant, and anti-allergic effects. In addition, grapefruits contain pectins, calcium, phosphorus, iron, zinc, magnesium, and potassium.

Consequently, they improve skin condition, boost immunity (being sources of immune-boosting vitamins) and positively impact the circulatory system (lowering cholesterol levels, strengthening and sealing blood vessel walls, reducing blood coagulability).

Grapefruit Aids Weight Loss

Grapefruits are known for their low-calorie content (just 42 calories per 3.5 ounces), low glycemic index (equal to 47), and high fiber content, which helps to create a sense of fullness.

Japanese scientists have additionally found that grapefruit juice increases the level of glycerol in plasma (stored energy is metabolized into glucose), breaking down fat bonds in the body. Furthermore, the scent of grapefruit oil slows down the action of the gastric parasympathetic nerve, which stimulates ghrelin - the 'hunger hormone' that triggers feelings of appetite.

The high fibre content and the slowdown of the 'hunger hormone' are the main advantages of grapefruit as a quick snack — you won't feel hungry soon after consuming this fruit.

Contraindications

However, it's important to remember that a break of at least several hours is recommended between consuming grapefruit and taking any medication. This is because naringin and furanocoumarins, compounds found in the fruit, inhibit the activity of liver enzymes. This could lead to accumulating medicinal substances in the body, which might cause dangerous side effects.