Via David Hembrow‘s enlightening blog, from the Dutch book “Cycling as Medicine”:
[abridged] “Obesity, heart disease, diabetes and depression are at the top of the list of preventable problems. They cause much personal harm and result in high healthcare costs. But there is already an all-in-one medicine available: the bike.
“In this book, normal people relate how cycling makes them healthier and experts put the medical value of the bicycle in plain language, both for prevention and cure.”