Low carb works, but it's not magic - it works because it naturally cuts calories when you drop bread, pasta, and all that, and a lot of people handle hunger better with more protein and fat! The problem is that "works" doesn't mean it's the best for you specifically, because what really matters is being able to stick with the change, and if other diets haven't lasted, maybe the issue isn't the diet itself but finding something you actually enjoy doing. If your doctor says it's safe and you think you can live without carbs for more than a month (that's the real test!), it's worth trying - just don't expect it to be different just because it's trendy, it's just another tool like any other.