Longevity: The Means Of Prolonging Life After Middle Age is a book written by John Gardner in 1875. The book explores various ways in which people can extend their lifespan beyond middle age, including diet, exercise, and lifestyle changes. The author draws on his own experience as a physician and researcher, as well as on the work of other experts in the field, to provide practical advice and guidance on how to live a longer, healthier life. The...