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Investors bet on obesity drugs before without much success. Why this next wave could be different

Josephine Flood | CNBC

It's been nearly a decade since the American Medical Association declared obesity a disease, but treating it has been complicated and muddled by the lingering perception that the condition is more about lifestyle and appearance than biology.

New obesity therapies are drawing a clearer line between mechanisms in the body and the difficulty some have losing weight — demonstrating hurdles no amount of willpower can overcome. The treatments are making greater amounts of weight loss possible, offering patients hope and investors a potential opportunity.

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