The Short Version
Coffee can temporarily raise blood pressure for one to three hours after consumption, particularly in non-habitual drinkers — but the unqualified claim that coffee "increases blood pressure" overstates the evidence. Multiple high-quality meta-analyses, a 2026 Mendelian randomization study, and large-scale population data consistently show that habitual coffee consumption does not produce sustained blood pressure elevation and may even be associated with lower hypertension risk. The claim captures a real but transient effect while omitting the tolerance and long-term context that most readers would need.