Fitness trends often promise that sweating eliminates toxins. However, experts clarify that the body’s primary cooling mechanism serves a more critical function.
Dr. Mona Foad, a board-certified dermatologist, states that sweating’s main purpose is to regulate body temperature and prevent overheating. While trace heavy metals might be washed away, the liver and kidneys handle internal detoxification. Sweat also protects the skin from infection and provides hydration.
Dr. Foad emphasizes that the health benefit comes from the activity causing the sweat, such as cardiovascular exercise, not the perspiration itself. Sauna use may improve circulation, but sweat volume is not a metric for workout effectiveness. Normal sweat levels vary significantly based on genetics and environment.
Regarding hygiene products, Dr. Foad notes that antiperspirants do not disrupt the body’s cooling system. The body has millions of sweat glands, so blocking the underarms leaves sufficient surface area for thermoregulation. However, she advises against full-body application and recommends consulting a provider for excessive sweating issues.