Does caffeine cause a rise in blood pressure?

Hello,
Welcome to the ehealthforum and I am really glad to help you out.

Caffeine is known to increase the blood pressure, although it may be transient. The increase can vary from 4-12 mmHg.

The exact reason for this increase is not known but is possibly due to either the release of adrenaline from adrenal gland or due to interference in the action of one of the hormones which causes dilatation of the blood vessels.

People who are addicted to coffee or caffeinated beverages may not have the increase in blood pressure because their bodies are accustomed to caffeine for long time.

People who are addicted to caffeine should gradually give up this habit or withdrawal symptoms like persistent headaches may occur.

I sincerely hope this information helps. Take care.