I’ve been a fan of the keto diet (low carb high fat) for a while. But I suspect any diet that cuts a very large group of foods like carbs or fats out forces you to be more mindful of what you’re eating. And that’s a large part of the weight loss on those diets.

Elsewhere in this thread it was stated that food journaling was the gold standard in weight loss, which also I’d expect to increase mindfulness around eating.