Research indicates that coffee may lead to short-term increase in blood pressure temporarily for up to 3 hours after consumption.
However, no long-term associations with increases in blood pressure or risk of heart disease have been found in people who drink coffee regularly.
Moderate coffee consumption on a regular basis is unlikely to have a significant effect on blood pressure or heart disease risk — even if you have been previously diagnosed with high blood pressure.
Rather, coffee may promote heart health due to its high antioxidant content.