Caffeine and Your Heart: Cardiovascular Effects Explained

Welcome to The Chemist Couple podcast! Are your daily cups of coffee helping or hurting your heart? In this episode, we break down how caffeine affects blood pressure, heart rate, and cardiovascular health, helping you enjoy caffeine wisely without risking your well-being. Whether you're a coffee lover or pre-workout fan, you'll walk away with actionable tips to protect your heart.

 

🔍 Episode Breakdown:

• 00:00 Why caffeine and cardiovascular health matter
• 01:27 What is caffeine? How it blocks adenosine
• 02:40 Hidden sources of caffeine (it’s not just coffee!)
• 05:50 What is the toxic dose of caffeine? How your body metabolises it
• 08:06 What research says about caffeine and heart health
• 09:18 Coffee vs energy drinks: Does the source matter?
• 10:18 Is decaf coffee still good for you?
• 11:40 How caffeine affects blood pressure
• 16:36 What is a safe daily dose of caffeine?
• 17:55 When to have caffeine for better heart health
• 19:50 Caffeine's impact on heart rate and risk of arrhythmias
• 28:15 How caffeine affects with your sleep
• 30:40 Is pre-workout harming your cardiovascular system?
• 33:25 How we’re adjusting our caffeine intake

 

What You’ll Learn:

• The surprising relationship between caffeine and heart disease
• How much caffeine is really safe for your heart
• Best practices for enjoying caffeine without disrupting sleep or fitness goals

 

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You can also watch this podcast episode on YouTube: https://www.youtube.com/channel/UCAf1zFQF4_dyVG4z8DD0_3Q 

 

As always, this podcast is for informational purposes only and should not be used in substitute to seeing a healthcare professional. Any questions, please reach out to us and thanks for listening!

 

Here is a list of the sources that we used to make this podcast:

 

https://academic.oup.com/eurheartj/advance-article/doi/10.1093/eurheartj/ehae871/7928425?login=false - Coffee timing and mortality

https://link.springer.com/article/10.1007/s12170-024-00735-8#Sec4 - Pre-workout studies on CVD

https://pmc.ncbi.nlm.nih.gov/articles/PMC9939061/- Coffee increasing CVD mortality

https://www.sciencedirect.com/science/article/pii/S0273230017302210#abs0015 - Caffeine and cardiovascular health report

https://www.sciencedirect.com/science/article/pii/S0273230017302210#sec1 - Caffeine and CVD overview

https://www.sciencedirect.com/science/article/pii/S0278691517301709#sec3 - Safe dosing of caffeine

 

Guyton & Hall Medical Physiology 14th edition- general physiology overview

 

Rang & Dale’s Pharmacology 10th edition - general pharmacological overview