dr. scott caan at johns hopkins says shame and blame approaches never work. what's needed to address the country's obesity problem is multi-facetted campaigns including education, marketing and price incentives. >>> a new break through could help infertile men have children. researchers in germany and israel were able to grow mouse sperm in a laboratory dish that took cells from the mice responsible for sperm production and grew them in a special compound creating sperm. scientists will now try to repeat the process in people. >>> a new study finds weight loss surgery can reduce the risk of heart attack or stroke. the research in the journal american medical association shows bariatric surgery can improve your overall health. significant weight loss can lower cholesterol levels and cure type two diabetes. >>> preschoolers who go to day care centers are not getting much physical activity. a new study in the journal pediatrics has some reasons why. researchers say parents have asked them to restrict physical activity to reduce the risk of injury. they also foun