LIVE SCIENCE: Health Benefits & Nutrition Facts of Cucumbers

Few foods are as cool as a cucumber. These low-calorie veggies contain many nutritional benefits, including hydrating properties and valuable nutrients.

While most people think of cucumbers as vegetables, they are actually a fruit. They contain seeds and grow from the ovaries of flowering plants. Cucumbers are members of the plant family Cucurbitaceae, which also includes squashes and melons. The most common type of slicing cucumber found in a grocery store is the garden cucumber, Cucumis sativus, according to World’s Healthiest Foods.

Cucumbers are good sources of phytonutrients (plant chemicals that have protective or disease preventive properties) such flavonoids, lignans and triterpenes, which have antioxidant, anti-inflammatory and anti-cancer benefits, according to World’s Healthiest Foods. The peel and seeds are the most nutrient-dense parts of the cucumber. They contain fiber and beta-carotene, a form of vitamin A that is good for eyes, reports Livestrong.com

Health benefits of cucumbers

Hydration
According to Ware, a registered dietitian nutritionist in Orlando, Florida “Cucumbers are 95 percent water." This makes cucumbers a great way to stay hydrated, especially during the summer. A cup of cucumber slices is “nearly as thirst-quenching as a glass of water,” according to Eating Well magazine.

The anti-inflammatory compounds in cucumbers help remove waste from the body and reduce skin irritation. Preliminary research also suggests cucumbers promote anti-wrinkling and anti-aging activity, according to an article in the journal Filoterapia.

Cancer prevention
Cucumbers contain two phytonutrient compounds associated with anti-cancer benefits: lignans and cucurbitacins. In recent years, pharmaceutical companies have been paying special attention to cucurbitacins, hoping to use them in new cancer drugs. According to a 2010 research review published in Scientific World Journal, scientists have found that cucurbitacins can help block the signaling pathways that are important for cancer cell proliferation and survival.

Skin Care
You’ve probably seen pictures of people at a spa relaxing with cucumber slices over their eyes. It turns out there’s science behind this pampering ritual. Ware explained, “Cucumbers have a cooling and soothing effect that decreases swelling, irritation and inflammation when used topically. Cucumber slices can be placed on the eyes can decrease morning puffiness or alleviate and treat sunburn when placed on the affected areas.” She also noted that high vegetable intake is associated with a healthy complexion in general.

Bone health
According to the University of Maryland Medical Center, in the past few decades, it has become clear that vitamin K is important to bone health, and one cup of cucumber contains about 19 percent of the recommended daily intake of vitamin K. One review published in Nutrition noted that vitamin K intake might reduce fracture rates, work with vitamin D to increase bone density and positively affect calcium balance.

Antioxidants
Cucumbers contain several antioxidants, including vitamin C, beta-carotene and manganese, as well as flavonoids, triterpenes and lignans that have anti-inflammatory properties. Vitamin C is well known for its immune system benefits, and beta-carotene has been shown to be beneficial for vision, according to the Mayo Clinic.

Credit: Live Science