How does sexual activity increase stroke risk?

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Sexual Activity Can Increase Stroke Risk Through Blood Pressure Surges

Sexual activity, including masturbation, has been associated with between 3.8% and 14% of all subarachnoid haemorrhage cases. This type of stroke occurs when a blood vessel in the brain ruptures, which is often linked to a sudden and significant increase in blood pressure. Such a surge in blood pressure is characteristic of sexual activity, and can be exacerbated by physical exertion or the use of certain drugs.
Sudden Blood Pressure Spikes During Sexual Activity

The primary mechanism by which sexual activity can elevate stroke risk is through a sudden increase in blood pressure. This elevation is considered a characteristic physiological response during sexual arousal and climax. A ruptured aneurysm, a weak spot in a blood vessel, is believed to be the cause of the stroke in these instances, and the increased pressure can lead to its rupture.
Physical Exertion and Stroke Risk

Beyond the direct physiological responses to sexual stimulation, the physical exertion involved in sexual activity can also contribute to the risk of brain bleeding. Similar to strenuous activities like lifting heavy objects, the physical demands of sex can place additional stress on the cardiovascular system. This added strain can, in susceptible individuals, trigger a rupture of a pre-existing aneurysm.
Factors Amplifying Risk

Certain factors can further amplify the risk of stroke during sexual activity. The use of recreational drugs, such as cocaine, or medications like Viagra, which can increase blood flow and heart rate, can lead to even more pronounced spikes in blood pressure. When combined with the physiological changes of sexual activity, these substances can significantly heighten the likelihood of a subarachnoid haemorrhage.

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