Monday, January 1, 2024

how does caffeine affect blood pressure in people with diabetes and heart stent?



Caffeine can temporarily increase blood pressure, but its long-term effects on blood pressure are unclear[1]. The blood pressure response to caffeine can differ from person to person[3]. For individuals with diabetes, caffeine can potentially raise blood sugar levels. One study found that people with type 2 diabetes who took a 250-milligram caffeine pill at breakfast had an 8% higher blood sugar level than on days when they didn't have caffeine[5]. 

For those with a heart stent, caffeine's impact on heart rate and blood pressure is a critical consideration. Moderate consumption of caffeine does not significantly increase the risk of a coronary event nor increase the frequency of cardiac arrhythmias[2]. However, heavy coffee consumption was associated with an increased risk of cardiovascular disease mortality among people with severe hypertension[10].

Habitual coffee drinkers become acclimated to these ingredients so their pressures don't rise more, but people who are not used to coffee can expect a temporary rise in their pressures after drinking coffee[11]. Drinking caffeine promotes the release of noradrenaline and norepinephrine which can increase heart rate and blood pressure in some individuals[14].

It's important to note that individual responses to caffeine can vary greatly, and what constitutes "too much" can differ from person to person. Therefore, it is best to consult with a healthcare provider to determine an appropriate amount of caffeine intake based on personal health status and medical history.

Citations:
[1] What caffeine does to blood pressure https://www.mayoclinic.org/diseases-conditions/high-blood-pressure/expert-answers/blood-pressure/faq-20058543
[2] Coronary precautions: should caffeine be restricted in patients after myocardial infarction? - PubMed https://pubmed.ncbi.nlm.nih.gov/1629006/
[3] Mayo Clinic Q and A: Caffeine's effects on blood sugar and blood pressure - Mayo Clinic News Network https://newsnetwork.mayoclinic.org/discussion/3-21-mayo-clinic-q-and-a-caffeines-effects-on-blood-sugar-and-blood-pressure/
[4] Caffeine Effects on the Cardiovascular System https://www.ncbi.nlm.nih.gov/books/NBK202224/
[5] How Does Coffee Affect Your Blood Sugar? https://www.webmd.com/diabetes/diabetes-and-caffeine
[6] Drinking 2 or more cups of coffee daily may double risk of heart death in people with severe hypertension https://newsroom.heart.org/news/drinking-2-or-more-cups-of-coffee-daily-may-double-risk-of-heart-death-in-people-with-severe-hypertension
[7] Habitual coffee consumption and blood pressure: An epidemiological perspective https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2605331/
[8] How much caffeine is too much? - Heart Matters magazine - BHF https://www.bhf.org.uk/informationsupport/heart-matters-magazine/nutrition/ask-the-expert/how-much-caffeine
[9] The impact of coffee consumption on blood pressure, cardiovascular disease and diabetes mellitus - PubMed https://pubmed.ncbi.nlm.nih.gov/28128673/
[10] Coffee and Green Tea Consumption and Cardiovascular Disease Mortality Among People With and Without Hypertension - AHA Journals https://www.ahajournals.org/doi/10.1161/JAHA.122.026477
[11] Coffee and your blood pressure - Harvard Health https://www.health.harvard.edu/heart-health/coffee_and_your_blood_pressure
[12] Hypertension Risk Status and Effect of Caffeine on Blood Pressure - AHA Journals https://www.ahajournals.org/doi/10.1161/01.hyp.36.1.137
[13] The Effect of Chronic Coffee Drinking on Blood Pressure | Hypertension - AHA Journals https://www.ahajournals.org/doi/10.1161/01.hyp.33.2.647
[14] Q&A: What effect does caffeine have on your heart? https://health.ucdavis.edu/news/headlines/qa-what-effect-does-caffeine-have-on-your-heart/2023/12
[15] People with very high blood pressure may want to go easy on the coffee https://www.heart.org/en/news/2022/12/21/people-with-very-high-blood-pressure-may-want-to-go-easy-on-the-coffee


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