Bryan Johnson· Author
High UV index times (9 am - 5 pm) is when skin damage happens.
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The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
High UV index times (9 am - 5 pm) is when skin damage happens.
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this happens when there's High UV that means so between 10:00 a.m. and 400 p.m. every day roughly in that window of time it's higher UV there's more damage it's higher in the summer than is the winter
High UV that means so between 10:00 a.m. and 4:00 p.m. every day roughly in that window of time it's higher UV there's more damage
it's higher in the summer than it is the winter
the highest damage happens between 10:00 a.m. and 400 p.m. every day when the UV index is high