One of the biggest challenges for medicine in the 21st century is understanding more about the diseases that come with aging like Alzheimer's, cancer and Parkinson's. Americans have made an enormous leap in life expectancy over the past century. Now, Bay Area scientists are looking to extend lifespan, and "healthspan" to 100 years and beyond.
You may listen to the Quest for Longevity Radio report online.
Andrea Kissack is Senior Editor for QUEST at KQED Public Radio.