More people in their 30s and 40s are having strokes. How to recognize and prevent them.

Dr. Tapan Thacker, a neurologist at Hennepin Healthcare, said strokes are becoming more common in younger populations. The rate of people ages 45 to 65 who experienced strokes increased 15 percent between 2000 and 2010, he said. The rate of people ages 35 to 45 who had strokes increased 40 percent during the same period.