Cucumber

Cucumber

The cucumber (Cucumis sativus; in Hebrew “מלפפון”) is about 96% water, which makes it one of the lowest-calorie vegetables there is. Contrary to the perception that it is “nutritionally empty”, the cucumber contains active phytochemicals, vitamins and minerals — and above all it is an ideal tool for eating a large volume with minimal calories.

It belongs to the gourd family (Cucurbitaceae) together with zucchini, pumpkin and melon, and comes in many varieties: the small Persian cucumber, the long English cucumber, pickling cucumbers (cornichons) and more.

Research-based health benefits

• Hydration and electrolyte balance: 96% water combined with potassium, magnesium and calcium — the cucumber helps keep the body hydrated more efficiently than water alone (because of the minerals). Important in hot weather, sports and conditions that drain fluids.

• Cucurbitacins: terpenoids that cause a slight bitterness in the skin and in damaged fruit. They are being studied for anti-inflammatory, anti-tumor and anti-diabetic activity in lab studies — with potential for treating fatty liver disease.

• Vitamin K: a cucumber with its skin provides about 16 mcg of vitamin K per 100 grams — about 13% of the daily intake. Essential for blood clotting and bone mineralization.

• Low in calories — high in volume: 100 grams of cucumber contain only about 16 calories. As a high-volume vegetable, it lets you “fill” the plate while staying in a calorie deficit — a central principle of the volume-eating approach (Volumetrics).

• Lignans: cucumbers contain lariciresinol, pinoresinol and secoisolariciresinol — plant lignans studied in connection with a lower risk of breast, uterine and ovarian cancer.

• Kaempferol and epicatechin: flavonoids in moderate concentration with anti-inflammatory and antioxidant activity.

• Magnesium and potassium: contribute to blood pressure regulation and to muscle and nerve function.

Downsides and health considerations

• Limited nutritional value without the skin: most of the fiber, the vitamin K and the phytochemicals (including cucurbitacins) are concentrated in the skin. A peeled cucumber is left as mostly water and a little starch. Always eat it with the skin when possible.

• Pesticides: cucumbers frequently make the “Dirty Dozen” list — buy organic or wash thoroughly. If not organic — it may be worth peeling.

• Gas in sensitive people: cucurbitacins may irritate the digestive system and cause gas in some people — usually in large amounts.

• Wax coating: long English cucumbers are sometimes coated with a food-grade wax to keep them fresh — another reason to wash them carefully.

Nutrition facts per 100 grams (with skin)

Culinary and practical use

• Raw in salads: the most common way — cucumber, tomato, onion, Bulgarian cheese and olive oil
• With cream cheese or tzatziki: as a dip — a refreshing, balanced snack
• Pickled cucumber: friendly probiotics (when pickled by natural fermentation, not just in vinegar)
• Green gazpacho: with avocado, ginger and lemon — a rich cold dish
• As a “cup” for bites: a large cucumber halved and topped with spreads — a healthy alternative to snacks
• Cucumber water (infused water): refreshing and interesting — adds subtle minerals

Summary

The cucumber is an excellent vegetable for filling the plate, for low-calorie snacking and for supporting hydration. It is not a “superfood” — but its role as an everyday staple vegetable, with the skin on and organic when possible, is valuable in a balanced diet.