Randy Jackson first picked up a bass guitar at the tender age of 13. Four decades on, the American Idol judge is something of a cultural icon, having achieved fame and fortune first as a member of 1980s pop sensation Journey, and then as a Grammy Award-winning producer, music manager, and executive, collaborating with artists ranging from Jerry Garcia and Bruce Springsteen to Madonna and Mariah Carey. But the endless days and nights in recording studios and on the road didn't just result in hits: The Baton Rouge, La.–born-and-bred Jackson ate all of the wrong foods—in particular, "Southern-fried favorites" and sweets—spent more time jamming on his bass than exercising, and eventually tipped the scales at more than 350 pounds.
Being diagnosed with type 2 diabetes in 1999 served as a major wake-up call. Almost immediately Jackson turned his focus to his health and well-being. Today, thanks to a balanced diet, exercise, gastric bypass surgery, and a whole lot of serious commitment, he's dropped more than 100 pounds, his cholesterol is down, and his blood glucose has been fine without medication for almost 5 years.