A Slovakia doctor has stated in his that solar flare activity is linked to an increase in brain hemorrhages and strokes. Dr. Michal Kovak has been conducting this study since the 1980s.

The doctor has been investigating the incidence of strokes in Nove Zamky, in southern Slovakia, and he has observed that the number of stroke patients increase on certain days, weeks, months or years. He found that there is a correlation between 11-year peaks in strokes and coronal mass ejections.

Another observation he made was that relatively fewer people suffered strokes during the moon's apogee. In his findings, he stated that the fluctuations in the earth's geomagnetic field affect people physically.

Even with these observations though, Dr. Kovak still has no clear explanation for all these. He says that the correlation between the human body and the solar and lunar phenomena is present, but he doesn't know how exactly to explain that correlation.