This week we talk to the Sandro Galea, Dean of the school of public health at Boston University.
His book, called Well: What We Need to Talk About When We Talk About Health (£18.99, OUP) takes a deep look at the differences between health and medicine, and looks at how everything from the environment, taxation, education and even luck plays a part in the overall health of a nation.
Speaking before the coronavirus pandemic, he explains the surprising factors that influence public health, which countries are doing it well, and why he felt he had to write this book.
Listen to the whole podcast on Science Focus.