I think there is absolutely a moral issue with these drugs but it's not the usual "personal responsibility" nonsense.

The problem is it makes it far less likely we'll address our poisonous food system. The US subsidises (crops including those that produce) HFCS to the tune of billions. Fresh fruit and vegetables aren't subsided. Advertising has been shown to impact consumer behaviour in other countries.

These drugs are, provisionally, miracle drugs. But they must be paired with regulation otherwise whatever addictive poison the industry comes up with next will repeat the cycle until everyone on earth is on them.