You’ve probably heard people talking about peptides lately. They’re everywhere on social media, promising everything from anti-aging to better fitness. But what are peptides really, and could they become one of the biggest breakthroughs in medicine? 

Karsten Eastman is the Co-founder and CEO of Sethera Therapeutics, a biotechnology company developing new ways to build peptide-based medicines. By using enzymes to reshape these tiny proteins, his team hopes to create treatments that last longer, work better, and one day help tackle diseases that have been difficult to treat.

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