Any diet that restricts a macro-nutrient—protein, carbohydrates, or fat—will have some drawbacks. Besides being a pain in the neck to plan, the body is going to fight the diet harder. Some diets have proven to have some health benefits but makes it more difficult to maintain due to their restrictive nature.
Last year we started a low-carb diet. I think I lose best on a low-carb diet. The problem is that it is tough when we travel. Low-carb means cutting out bread, especially gluten and that includes all the foods we like associated with bread, such as pizza, hamburgers, etc. We did well, but we seemed to reach a point during the holidays and on trips during that timeframe when we said phooey on the diet. We gained back the weight we lost. It also seems that going off a low-carb diet means putting on the weight quickly.
It also is hard to get going again on the diet. As seniors we look for ways to save money and the coupons that save the most are for higher carb meals, such as hamburgers and tacos. Sometimes a diet isn’t sustainable because it costs too much.