How many hairs does a person lose in 80 years?

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The answer

2.2 million hairs

About 2.2 million. More than twenty full heads of hair.

How to get there

1. about 75 hairs a day
2. × 29,220 days
3. = about 2.2 million

Source: American Academy of Dermatology via Healthline: 50 to 100 hairs a day

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