A new study published in the Journal of Neurology, Neurosurgery and Psychiatry says that strokes are more likely to occur during two peak periods. Japanese researchers who conducted the study said that strokes appeared to occur more frequently between 6am and 8am and 6pm and 8pm.
The researchers examined 12,957 cases and said that the risk of a stroke was lowest during sleep. This may probably be due to changes in the body's internal clock, they speculated. Researchers from Iwate Medical University in Japan studied data on three different types of strokes.
Ischemic stroke, where blood flow to brain arteries is interrupted, was the most common, followed by hemorrhagic strokes. They found that all three types of strokes peaked two hours in morning and two hours in the evening.