In today's youth-obsessed culture, mixed messages about diet, exercise, and skin care are everywhere. But one thing is clear: fat is always the enemy. Right? Wrong, says James R. Lyons, M.D. In BROWN FAT REVOLUTION, Dr. Lyons explains that, contrary to popular belief, fat is the key to a youthful looking face and body. But it has to be the right kind of fat. Unlike the yellow, mushy, unhealthy fat that makes us look old, brown fat is healthy, firm,...