Do you know the secret to weight loss? Do you know about the best diet for weight loss? I’m often asked for my personal and professional opinion on this, and the answer is always the same: there are no secrets to weight loss and the best diet for achieving your goal weight is any diet that you can stick with for a long time. All of them work in the short term. All of them. All the gimmicky ones, and the extreme ones, and the mega-hardcore-extreme ones; they all work. But most of them do not work long term. They are not sustainable.