Problem: Karan is a college student and usually eats junk food. He wants an absolutely safe way to manage his weight and is thinking of undergoing bariatric surgery in the next 2 years. Which of the following would be a preferable suggestion for Karan? Go on a "crash diet" that would require him to skip two meals and eat only one low-calorie full meal a day. Limit his diet to include high-calorie, processed, and canned foods. Undergo immediate bariatric surgery instead of waiting for 2 more years. Adopt permanent lifestyle changes such as reducing his intake of junk food and starting to exercise.