Zinc is a mineral with a lot of benefits, and it has been studied extensively for its role in supporting the immune system. It is commonly used in the prevention and treatment of colds, skin conditions, and common infections. This mineral also has an important role in the regulation of testosterone production, and a zinc deficiency can impede the body's production of this anabolic male hormone. A good zinc level is therefore important for male fertility and for anyone trying to build muscle. Zinc is an essential mineral which means we must take it in through food, and it is found abundantly in seafood, meat, dairy, and many vegetables, cereals and legumes. It's not always easy for busy people to eat a varied diet, and a zinc supplement is a convenient way to fight sickness, ensure ongoing health and optimise muscle growth.