Health officials say there's no connection between any of them. Nationally, they have been going up in recent years, but experts don't yet know why. In the biggest study on the topic, Harvard researchers conclude that eating lots of fruits and vegetables doesn't reduce the risk of breast cancer after all. While researchers are disappointed, they do say a diet rich in produce still fights heart disease, which is the number one killer of women. The protein, BAG-1, is found in tumors.
Nobody knows what's behind the shift.
The rise in childhood obesity is the leading theory, since body fat can spur sex hormones. Other researchers believe environmental factors are culprits, based on a study in Puerto Rico showing even young children are experiencing early puberty. Dr. Hargrove says that all speeds recovery. For the first time, the complete map of the human genome is being published. At a Washington news conference, scientists from the two teams creating this roadmap for life admitted there have been surprises.