“A dazzling book… As easily absorbed as sunlight itself, this vigorous text covers optics, biology, physiology and anthropology. Anyone interested in these fields should applaud its readability, although couch potatoes might find the contents dismaying.” —Nature

For decades, doctors have told us to avoid sun exposure, in order to reduce rates of skin cancer. Yet the science consistently shows that moderate sun exposure leads to lower rates of many diseases, including heart attack, stroke, obesity, diabetes, dementia, depression, Parkinson’s, myopia, respiratory infections, certain cancers, and autoimmune conditions. In Defense of Sunlight explains how we got the science all wrong, and what we can do to rediscover the benefits. 

“Clear-eyed…breezy…the sun-deprived among us would surely profit from Mr. Jacobsen’s straightforward recommendations.” —Wall Street Journal

“So well argued….A fantastic book. I picked it up for no reason, and then ended up absolutely loving it.” —Traci Thomas, Here & Now

“A terrific book — well written, well researched, and genuinely thought-provoking. It is a must-read, and it will likely change the way you think about light, health, and wellbeing.” —Alistair Nunn, The Guy Foundation