A new British study finds having shingles when you're young may significantly raise your risk of having a stroke- even years later.
Researchers at University College, London compared about 100,000 people who had shingles, to more than 213,000 who didn't have shingles. They found that people under 40 were 74 percent more likely to have a stroke if they had had shingles.
The scientists say further studies should investigate whether the shingles vaccine can help reduce the number of heart attacks and stroke. They also say anyone with shingles, especially younger people, should be screened for stroke risk factors.