Tropical Storm Isaac heads for U.S. Gulf Coast MIAMI (Reuters) - Tropical Storm Isaac swirled into the Gulf of Mexico on Monday, disrupting U.S. offshore energy production and threatening to hit Louisiana as a hurricane seven years to the day after devastating Hurricane Katrina. The storm swiped south Florida on Sunday before moving into warm Gulf waters, where it is expected to strengthen into at least a Category 1 hurricane. On its current track, Isaac was due to slam into the Gulf Coast anywhere between Florida and Louisiana by midweek, the U.S. National Hurricane Center said. ... more info... Extra pounds tied to breast cancer recurrence, death NEW YORK (Reuters Health) - Among women who have been treated for breast cancer, heavier women are more likely to have their disease come back and more likely to die of cancer, according to a new study. That could be because certain hormones that are linked to body weight may also fuel tumor growt...