Breakthrough drugs aren't always driven by novel biological targets. Major successes like Humira or GLP-1s often succeeded through a superior modality (a humanized antibody) or a contrarian bet on a market (obesity). This shows that business and technical execution can be more critical than being the first to discover a biological mechanism.

Drugs like Ozempic (GLP-1 agonists) show promise for addiction treatment because they may reduce the fundamental 'wanting' of a substance, rather than just helping a person fight cravings. An addicted patient's core desire is often 'not to want,' and these drugs may directly address that by altering the brain's reward and satiety signaling.

The success of GLP-1s like Ozempic, which address weight loss, addiction, and metabolic fitness, has made the public more receptive to longevity drugs. People now better understand how a single drug targeting a core mechanism (like metabolic health) can have widespread, seemingly magical downstream benefits.

Originally for diabetes, GLP-1s' broad positive effects on inflammation, heart, and brain function position them as the first mainstream drugs for human enhancement and longevity, moving beyond simple disease management.

While GLP-1 has been a known target for a long time, the recent explosion in peptide therapeutics was primarily enabled by solving the historical challenge of poor half-life and exposure. Achieving one- or two-week half-lives through techniques like fatty acid acylation was the critical technological unlock for the field.

The dominance of peptides for GLP-1 therapeutics isn't a failure of antibodies but a success for picking the right tool. Peptides have a natural advantage when the therapeutic strategy involves engineering a natural ligand, making them a better starting point for certain targets like GPCRs.

The FDA defines a peptide as an amino acid chain of 40 or less. Blockbuster drugs like Ozempic and Mounjaro are all exactly 39 amino acids long. This perfect fit suggests potential regulatory shaping or clever drug design to fit an advantageous classification.

Scott Galloway argues GLP-1 drugs (like Ozempic) will have a greater societal impact than AI. By tackling obesity, they could halve U.S. healthcare costs, help solve the deficit, and even curb addictions, making them a profoundly transformative technology.

Unlike most drugs with targeted effects, GLP-1s are remarkable for their broad-based impact. They concurrently improve metabolism, mitochondrial creation, cellular cleanup (autophagy), and inflammation, explaining their profound and varied benefits.