Susan B. Roberts, PhD is Professor of Nutrition and Professor of Psychiatry at Tufts University and author of The "I" Diet weight-loss program. Weight loss on this program averages 16 pounds in 8 weeks and 30 pounds in 5 months.

Don't take the studies linking it to weight gain too seriously. The Daily Beast's Susan B. Roberts on the war over diet drinks—and how to make them taste better.

A new medical study says women must work out for 60 minutes, every single day, to avoid gaining weight as they age. But Dr. Susan Roberts says the conclusion is absurd.

If you gained 10 pounds over the holidays, you'll need to remove around 32,000 calories of fat to get it off. Dr. Susan Roberts guides you back to your pre-eggnog, pre-gravy, pre-pie self.

If you know where to sit at the table and what to eat the day before the big feast, you won’t gain weight this weekend. Susan Roberts on four holiday diet tricks.

Your relationship may be hot, but it’s making you heavy. New research confirms moving in together often leads to weight gain.

New research finds overeating is linked to positive personality traits-like being unusually engaged with the world. Susan B. Roberts on the surprising collision of personality and willpower.

Restaurant Syndrome: 1. Eat out. 2. Eat too much. 3. Feel bad. 4. Repeat. The Daily Beast’s Susan B. Roberts on why you do it—and five ways to minimize the damage.

  With summer one month away, you may think it’s too late to get in bikini-ready shape. But new research shows that when it comes to dieting, slow-and-steady doesn’t always win the race.