Where does this come from, and can I check it?

Hair follicles cycle through growth rest and shedding phases continuously. The figure is taken from MedlinePlus, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a human body fact?

Yes. It sits on the Human Body shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

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The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

Human scalp hair grows at about one centimetre per month

Hair follicles cycle through growth rest and shedding phases continuously

Scalp hair grows at an average rate of roughly 1.25 centimetres per month, or about 15 centimetres per year. Each hair follicle undergoes a cyclic growth pattern consisting of an active growth phase lasting years, followed by short regression and resting phases before shedding.

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Where this comes from

MedlinePlus

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Tags: hair, follicles, growth

Human scalp hair grows at about one centimetre per month: the short answers

Where does this come from, and can I check it?: Hair follicles cycle through growth rest and shedding phases continuously. The figure is taken from MedlinePlus, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a human body fact?: Yes. It sits on the Human Body shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.