Cucumbers are naturally high in water so their relative concentration of nutrients is low. Nonetheless, cucumbers contain potassium, magnesium, vitamin C, folate, beta carotene, and vitamin K. Cucumbers are a non-starchy vegetable, which is one of the best categories of food for managing diabetes 
Cucumbers are a good way to add more fiber and potassium to your meal. Fiber improves satiety and helps keep cholesterol levels down, while potassium reduces blood pressure levels.