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It depends on how sweeteners impact your unhealthy habits. If sweeteners help you fix your diet, help you eliminate unhealthy food so that your insulin levels remain in narrow healthy ranges, then they help. But they do elevate blood sugar levels, so if you still eat harmful levels of dietary sugar, then they would increase the chance of Type 2.

It might be better to train your taste preferences to prefer less sweet food, then you’re less likely to lapse because you stop anticipating sweet food. Susan Pierce in the book Bright Line Eating, recommends that approach.