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

Greater blood supply and physical use stimulate faster nail plate growth. 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

Fingernails grow almost four times faster than toenails

Greater blood supply and physical use stimulate faster nail plate growth

Fingernails grow at an average rate of 3.5 millimetres per month, whereas toenails grow at roughly 1.6 millimetres monthly. Increased blood circulation in the hands, along with greater exposure to physical stimuli and light, contributes to faster fingernail growth.

Where this comes from

MedlinePlus

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

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More than half of all human bones are in the hands and feetEach hand contains 27 bones and each foot holds 26 bones for intricate movement Hair and fingernails are composed of the protein keratinTough structural proteins form non-living outer protective structures An adult human skeleton consists of 206 bonesInfants are born with around 270 bones which fuse together over childhood Human scalp hair grows at about one centimetre per monthHair follicles cycle through growth rest and shedding phases continuously Some bamboo grows almost a metre a dayFast-growing species can add 90 centimetres in 24 hours The human body contains up to four million sweat glandsEccrine and apocrine glands secrete watery sweat to cool body surface

Tags: nails, growth, hands

Fingernails grow almost four times faster than toenails: the short answers

Where does this come from, and can I check it?: Greater blood supply and physical use stimulate faster nail plate growth. 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.