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The healthiest vegetables: low calories, but what do they contain?

Vegetables are the perfect food for any diet, and in general it is a good habit to eat as many as possible. Light and healthy, vegetables are a staple in every culture's diet, as they have the lowest calorie intake and the best nutrients.

But if sugars, fats and proteins are low in them, then what are they made up of? Why are they good for you?

So here is why vegetables are good for you: what they give the body, what are their specific characteristics. Find out with us, along with a study conducted by Focus.

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Watercress (11.76 Cal/100g)
A little-known vegetable, it has by far the lowest caloric intake of all. Benefits? Just 48 grams of watercress is enough to get the full daily requirement of vitamins K and A, plus 23 percent of vitamin C.
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Iceberg lettuce (14.04 Cal/ 100g)
Iceberg is the most widely grown and eaten type of lettuce in the world. It has a huge water content (95.6 percent), has lots of vitamin K, provitain A, and aeolic acid.
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Zucchini (15 Cal/100g)
Zucchini can be eaten almost any way and along with a great many other foods. It contains lots of vitamins A, B1, B2, C and PP. The peel also has high nutritional value, as it contains folic acid and carotenoids.
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Cucumbers (15.38 Cal/100g)
Very low in calories, cucumbers are the absolute most water-containing solid food (96.7 percent). It is perfect as a base for low-calorie foods such as chicken or tuna.
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Celery (15.83 Cal/100g)
A perfect food to combat stomach acidity and reflux, it is the third most water-containing food of all after cucumbers and iceberg lettuce. Each stalk contains just 6 calories, and is rich in vitamins A, C,E and K.
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Radishes (16.38 Cal/100g)
This root vegetable is rich in antioxidants (prevents liver disease), and this is its most important feature. Radishes are also a source of potassium and vitamin C.
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Romaine lettuce (17.02 Cal/100g)
It can also be eaten grilled, and is a huge source of fiber and water. Rich in magnesium and potassium, it has tremendous antioxidant qualities.
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Tomatoes (18.12 Cal/100g)
One of the most versatile foods of all. Eaten cooked, raw, blended to make a sauce, grilled, stuffed-anything is possible with tomatoes. Many studies have shown how they are helpful in preventing stroke, cancer and heart disease.
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Swiss chard (19.44 Cal/100g)
Broad leafy vegetable, very rich in vitamin K (a vitamin that helps blood clotting). Depurative, antioxidant, it is one of the lightest and most detoxifying vegetables.
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Asparagus (21.11 Cal/100g)
It can come in various types and colors (white, green or purple), asparagus has diuretic and antioxidant properties. In addition, asparagus has a very low glycemic index, so it is perfect for people who suffer from diabetes. They also have no cholesterol or harmful fats.
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