What is the largest organ of the human body?

The story behind the answer

Skin is the largest organ of the human body, covering about 1.5–2 square meters in an average adult and weighing roughly 3–4 kilograms. It’s a multifunctional shield: it protects against pathogens and UV radiation, regulates body temperature through sweat and blood flow, enables sensation via nerve endings, helps synthesize vitamin D, and supports immune defense.

Structurally, it has three main layers: the