What is the primary purpose of a helmet?

The primary purpose of a helmet is to protect the head from injury. Helmets are designed with materials and construction specifically aimed at absorbing impact energy and reducing the risk of head trauma in the event of a fall or collision. This protective function is critical in various activities, from cycling and skating to construction and other high-risk environments, where head injuries can occur. The design of a helmet includes features such as a hard outer shell and an inner foam lining that work together to cushion and safeguard the skull and brain.

While performance enhancement, fashion, and warmth may be considerations in certain contexts, they do not overshadow the fundamental role that helmets play in safety. The effectiveness of a helmet in preventing serious head injuries is well-documented, making protection the key reason for their use.