Acne is a skin condition that occurs when hair follicles become clogged with oil and dead skin cells. This can lead to the formation of pimples, blackheads, and whiteheads on the face, neck, chest, and back. Acne can be caused...

Calcium regulation and kidney stone A kidney stone, also known as a renal stone or urinary calculi, is a solid piece of material that forms in the kidney or urinary tract. Kidney stones are formed when there is an excess...