Former FDA chief Dr. David Kessler says the new weight-loss drugs are a powerful tool to fight obesity. But they come with pitfalls. Here's his tips for how to use them successfully.

The weight-loss drugs are linked with reduced rates of excess drinking and opioid overdoses, suggesting they may tamp down substance use cravings too.

The drug companies behind blockbuster weight loss and diabetes treatments have signaled that supply problems could soon be over, but many patients still have trouble getting the medicines. 

A doctor argues that the current focus on fighting obesity with drugs like Ozempic ignores the bigger picture: We need a medical system and society that support healthy life habits.

There's already a huge demand for existing weight-loss drugs, so the new medication is highly anticipated. Obesity affects an estimated 650 million adults globally.