Complex sentence: The South Beach Diet is a diet plan designed by cardiologist Arthur Agatston and dietician Marie Almon as an alternative to low-fat approaches such as the Ornish Diet and the Pritikin Diet advocated by the American Heart Association in the 1980s.
Split into simpler sentences: The South Beach Diet is a diet plan designed by cardiologist Arthur Agatston and dietician Marie Almon as an alternative to low-fat approaches such as the Ornish Diet and the Pritikin Diet. The diet advocated by the American Heart Association in the 1980s.