Ten young mothers submit their breast milk for lab testing. The reports that come back contain a slew of strange chemicals and substances.
They are potent symbols of sex, fertility, and nurturing. They are also changing. Human breasts are growing bigger and appearing earlier, with higher rates of cancer than ever before. Why? Is it a product of evolution? Obesity? The chemicals around us? Follow doctors and scientists, who are using new ways of analyzing breast tissue, and revealing startling and disturbing truths. Then witness the surprising discoveries made when modern science puts breast tissue and breast milk under the microscope.
Access even more free Smithsonian Channel full episodes and documentaries online through participating TV providers.
Find out if your television provider carries Smithsonian Channel.
Don't panic! It's simple to upgrade to the latest version of one of these browsers:
Don't panic! To get the best possible experience on smithsonianchannel.com we recommend you upgrade your operating system.
For the best possible site experience, please use Chrome for Android.
Add username "SmithsonianChan" on Snapchat for fun and fascinating facts. We'll be sharing spontaneous photos and videos as inspiration strikes.