coconut

 A coconut is the edible fruit of the coconut palm (Cocos nucifera), a tree of the palm family. Coconut flesh is high in fat and can be dried or eaten fresh or processed into coconut milk or coconut oil. The liquid of the nut, known as coconut water, is used in beverages.

Coconuts are especially high in manganese, which is essential for bone health and the metabolism of carbohydrates, proteins, and cholesterol. They're also rich in copper and iron, which help form red blood cells, as well as selenium, an important antioxidant that protects your cells.
Side effects and Precautions while Consuming Coconut:

• Higher doses of coconut water increase blood potassium levels, causing irregular heartbeat and kidney problems.

• Some peoples are allergic to Coconut milk and its products. 

• Coconut oil can cause nausea if consumed in excess.

Drink it early morning on an empty stomach: Drinking coconut water first thing in the morning on an empty stomach can help in many ways. 
Coconut water contains lauric acid, which helps in boosting your immunity, kick-starting your metabolism and facilitating weight loss.  
Coconut water eliminates toxins from the body and breaks down kidney stones. As a natural diuretic, it's really helpful for those of you who have kidney disease. It cleanses the urinary tract, as well as bladder channels too, so after a week you may find yourself feeling a lot more healthy and energetic.