In September 2019, Sinclair published Lifespan: Why We Age – and Why We Don't Have To, a New York Times bestseller, co-written with journalist Matthew LaPlante and translated into 18 languages.
In September 2019, Sinclair released the book Lifespan: Why We Age – and Why We Don't Have To, which became a New York Times bestseller. The book was co-authored by journalist Matthew LaPlante and published in 18 languages.