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Why do we have hair?

Dr. Jeanne Morrison, PhD
Family Practitioner
The human body contains roughly 5,000,000 hair follicles. The function of each hair follicle is to produce a hair shaft. The function of human hair depends on the part of the body from which it grows. Human hair performs several functions. It protects the skin from environmental influences. It responds to external input and translates this information into neurological impulses that are interpreted as sensory stimuli by the brain. Scalp hair is also the only part of the human body that can be readily and consciously modified to change an individual's external appearance. So it also serves as an important means of allowing individuals' to socially communicate.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.