31Evidence B

Getting some sun during the day — don’t stay out of the light all the time

In a study from Sweden, women who deliberately avoid the sun have an expected lifespan 0.6 to 2.1 years shorter than those who get the most sun exposure. Non-smokers who avoid the sun have a lifespan similar to smokers who get the most sun exposure.

Cost

No cost at all. Just a few minutes each day — on your comm…

Benefit

A Swedish study followed nearly 29,500 women for 20 years. Compared to the group getting the most sun, those w…

Cost

No cost at all. Just a few minutes each day — on your commute or during lunch breaks is enough.

Benefit

A Swedish study followed nearly 29,500 women for 20 years. Compared to the group getting the most sun, those who avoided it ended up living 0.6 to 2.1 years less. The authors noted that “non-smoking women who avoid sunlight have life expectancies comparable to smokers in the group getting the most sun exposure.”

Original sources

Lindqvist PG, Epstein E, Nielsen K, et al. (2016). Avoidance of sun exposure as a risk factor for major causes of death: a competing risk analysis of the Melanoma in Southern Sweden cohort. Journal of Internal Medicine, 280(4), 375-387. https://doi.org/10.1111/joim.12496

Open source link
Book note

The controversy lies in: Sweden has high latitude and little sunlight, so the conclusion cannot be directly applied to China. Furthermore, the author speculates that people who avoid sunlight may already be physically weak or dislike going outdoors. The authors of the paper themselves stated that women who are frequently exposed to the sun have a higher risk of skin cancer. Therefore, do not sunbathe to the point of sunburn; protection is still necessary under intense midday light.

My note