And they rarely lived for more than 30 years.

> Data is lacking, but computer models provide the estimate. If a person survived to age 20, they could expect to live around 30 years more

The average life expectancy was dragged down by high infant and adolescent mortality.

https://en.m.wikipedia.org/wiki/Life_expectancy

If this is a honest perspective on sunscreen I can't imagine what they potentially believe about vaccines...