Cucumber

Though commonly thought to be a vegetable, cucumber is actually a fruit.

It's high in beneficial nutrients, as well as certain plant compounds and antioxidants that may help treat and even prevent some conditions.

Also, cucumbers are low in calories and contain a good amount of water and soluble fiber, making them ideal for promoting hydration and aiding in weight loss.

Cucumbers are low in calories but high in many important vitamins and minerals.

One 11-ounce (300-gram) unpeeled, raw cucumber contains the following (1):

Calories: 45
Total fat: 0 grams
Carbs: 11 grams
Protein: 2 grams
Fiber: 2 grams
Vitamin C: 14% of the RDI
Vitamin K: 62% of the RDI
Magnesium: 10% of the RDI
Potassium: 13% of the RDI
Manganese: 12% of the RDI
Although, the typical serving size is about one-third of a cucumber, so eating a standard portion would provide about one-third of the nutrients above.

Additionally, cucumbers have a high water content. In fact, cucumbers are made up of about 96% water (2).