Filed under: General Health, Women's Health, ObesityStrokes have tripled in recent years for women ages 35 to 54. To blame for this alarming figure is the obesity epidemic.According to a federal health survey that zeroed in on the years 1999 to 2004, two percent of women in this age group suffered a stroke. In a previous survey, from 1988 to 1994, only one-half of a percent had strokes. Although these percentages are small -- most strokes occur in older people -- the sudden spike in middle age i