Rob Lowe maintains his healthy lifestyle by eating high-protein, low-sugar, and low-carb foods. But he isn't afraid to indulge every once in a while. Rob Lowe isn't a fan of "diets." The 53-year-old actor, who was recently named as a spokesperson for Atkins, would rather eat to maintain a healthy lifestyle instead of to lose weight. Lowe tells INSIDER, "I'm not a huge fan of diets."