Sun exposure health benefits study

Sun exposure linked to lower mortality risk, author argues

7 reported

A new book argues that sunlight exposure may offer greater health benefits than commonly believed, based on research from the UK Biobank dataset. Author Rowan Jacobsen, a former Knight Science Journalism Fellow at MIT, summarizes findings in his book "In Defense of Sunlight," published this month. He states that those who received the most daylight were 34% less likely to die from any cause than those with less light exposure, and 17% less likely after accounting for exercise and diet. The article notes that sunlight produces dozens of beneficial molecules that lower blood pressure, reduce inflammation, and improve sleep. While acknowledging that sun exposure increases skin cancer risk, the author points out that only about 3,500 people die from skin cancer annually in the UK, representing 1% of deaths from cancer and cardiovascular disease. The article suggests that recommendations to avoid sun originated in Australia, a very sunny region, and may not be appropriate for low-light environments like the UK.

What’s reported

A 2024 study using UK Biobank data tracked light exposure in over 88,000 volunteers and followed them for years.

Those with the most daylight were 34% less likely to die from any cause than those with less light exposure.

After accounting for exercise and diet, the light-getters were still 17% less likely to die.

Sunlight produces dozens of beneficial molecules that lower blood pressure, reduce inflammation, and improve sleep.

About 3,500 people die of skin cancer in the UK each year, which is 1% of the 350,000 deaths from cancer and cardiovascular disease.

The original recommendations to shun the sun came from Australia, a sunny place with a fair-skinned population.

The author attributes lack of public awareness to "anchoring bias," where people cling to initial information.

Misconceptions

The article addresses the misconception that sun exposure is primarily harmful, stating that those who spend more time in the sun tend to be healthier.