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No one should be expected to go from eating in an unhealthy fashion to a healthy one, just as one would not learn to hold one's breath for three minutes right away. But there are those who try and get better, and there are those who try and don't, and there are some people who simply don't try. This drug is good for the second group. But is bad for the third, the people who will use this to continue eating badly, just with the consequences less visible. And I think it could also be bad for the first: by hiding the immediate effects of bad habits, it removes the encouragement to get better. The concern that this may allow people to maintain bad diets but not see the effects in the short term is a valid one.

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