The mid-morning habit that's quietly hurting your heart health? Having that second cup of coffee (or any caffeinated beverage) on an empty stomach. "[Having an] empty stomach accelerates caffeine absorption, potentially intensifying its effects," Dr. Runge explains. "Caffeine also raises cortisol levels, which can amplify anxiety or jitteriness."While moderate caffeine use “doesn't increase cardiovascular risk,” Dr. Runge notes that making this a daily habit can add up. "Repeated stimulation might stress the system over time," he says.Related: Cardiologists Warn That This Is the #1 Worst Habit for Your Heart (And What to Do Instead)
How Much Coffee Is Too Much?
According to Dr. Runge, some groups are especially vulnerable to caffeine's effects, particularly mid-morning, when consumed without food:
Individuals with hypertension or known cardiovascular risksWomen, especially during menstruation or perimenopauseThose with slower caffeine metabolism (including during pregnancy or while taking oral contraceptives)People with anxiety disordersIndividuals with prehypertension, especially above 200 mg/dayThose with a slow CYP1A2 gene variant, who may be at greater risk for hypertension or heart attack with high caffeine intakeRelated: The One Thing You Should Never, Ever Do if You're Over 60 and Want to Keep Your Heart Healthy
Heart-Healthy Alternatives
Another option? Light physical activity or a brief walk. "This increases alertness naturally," Dr. Runge explains. (It's true!) Finally, be sure you're staying hydrated—you might be thirsty, not tired. "Dehydration often mimics fatigue," Dr Runge concludes.
Related: Cardiologists Are Begging People to Stop This Common Habit ASAP
Sources
Marschall Runge, MD, PhD, a cardiologist, CEO and dean at University of Michigan Medicine and executive vice president for medical affairs at the the University of Michigan Read More Details
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