Coffee consumption impacts dementia risk and blood pressure

Recent medical insights highlight the complex relationship between coffee consumption, blood pressure, and cognitive health. A 43-year study from Harvard University suggests that habitual coffee consumption, specifically 2 to 3 cups per day, may reduce the risk of dementia.

Regarding hypertension, the Japanese Society of Hypertension defines high blood pressure as a sustained systolic reading of 140 mmHg or higher, or a diastolic reading of 90 mmHg or higher. While caffeine can cause temporary spikes in blood pressure, long-term habitual consumption does not necessarily increase the risk of chronic hypertension due to potential caffeine tolerance and the presence of beneficial polyphenols. However, individuals with hypertension should monitor their intake and consider decaffeinated options.

Caution is advised regarding caffeine toxicity. Excessive intake can lead to acute poisoning, with symptoms ranging from tremors and palpitations to severe conditions like seizures or loss of consciousness. Medical intervention is recommended if symptoms such as chest pain, irregular pulse, or vomiting occur. For adults, a general guideline is to keep caffeine intake below 400 mg per day.