Longevity doctor reveals what matters most for aging well, beyond pricey biohacks

As "biohacks" like peptides, cold plunges and high-tech wearables grow in popularity, some advocates promote the idea of dramatically extending human life — but others say it’s better to focus on more healthy years rather than living forever.

Dr. Annu Navani — chief medical officer at Le Reve Wellness in San Jose, California, where she leads advanced regenerative and longevity medicine programs — said the biggest myth is that people will be able to live for a "very, very long period of time."

"I...