Experts Warn This Habit Could Age Your Heart Fast

For decades, public health campaigns have emphasized the importance of diet, exercise and avoiding smoking for a healthy heart. However, cardiologists are increasingly recognizing a fourth, often overlooked pillar of cardiovascular health: sleep. Chronic sleep deprivation isn’t simply a matter of feeling tired; it can actively contribute to the aging of your heart and increase your risk of serious health problems.

How Chronic Sleep Deprivation Ages Your Heart

Raises Blood Pressure

Cardiologist Elizabeth Klodas, MD, FACC, emphasizes the fundamental need for sleep, stating, “All animals sleep. This tells us that sleep is a natural and essential component of life.” When sleep is consistently lacking, the body’s “fight or flight” system – known as sympathetic tone – remains heightened. This elevation in sympathetic tone, coupled with increased inflammation, can lead to blood pressure elevations and irregular heartbeats. Over time, this forces the heart to work harder, thickening the heart muscle and damaging arteries, accelerating cardiovascular aging.

Increases Inflammation and Plaque Buildup

Inflammation plays a critical role in the development of atherosclerosis, the buildup of plaque within the arteries. Insufficient sleep is linked to increased levels of inflammatory markers like C-reactive protein (CRP) and interleukin-6. According to Danielle Smiley, RDN, LDN, CD-N, chronic inflammation damages the endothelium—the lining of blood vessels—promoting plaque formation and increasing cardiovascular risk.

Promotes Insulin Resistance

Chronic sleep deprivation also disrupts the body’s ability to regulate glucose effectively. Even short periods of sleep restriction can reduce insulin sensitivity, potentially leading to high glucose levels and an increased risk of type 2 diabetes. This, in turn, damages blood vessels and contributes to the buildup of fatty material in the arteries, further elevating the risk of atherosclerosis and cardiovascular disease. Klodas notes that sleep deprivation can also lead to poorer health choices, such as reduced exercise and unhealthy eating habits, exacerbating blood sugar control issues.

Did You Know? Sleep isn’t just “rest”; it’s an active process that regulates blood pressure, inflammation, blood sugar, and even your heart’s rhythm.

How Much Sleep is Enough?

While individual sleep needs vary, experts recommend aiming for seven to nine hours of sleep per night. If you experience persistent difficulty sleeping, loud snoring, waking up gasping for air, or excessive daytime sleepiness, it’s important to consult with a healthcare provider, as these could be signs of sleep apnea.

Ways to Improve Your Sleep Quality

Improving sleep quality is a proactive step toward protecting your heart. Several strategies can help support better sleep and cardiovascular health.

Move your body daily. Physical activity regulates circadian rhythms, reduces stress hormones, and improves sleep quality. Klodas explains that exercise is a great stress reliever, even a short 15-minute walk can be beneficial.
Skip the alcohol before bed. While alcohol may initially induce relaxation, Klodas cautions that its metabolites are stimulating and can disrupt sleep. Water or herbal tea, like chamomile, are better alternatives.
Avoid screens right before bedtime. The blue light emitted from phones, tablets, and TVs suppresses melatonin production, the hormone that signals the body it’s time to sleep. Reducing screen exposure and avoiding stimulating tasks an hour before bed can help lower cortisol and support melatonin production.
Choose sleep-supportive foods. Certain nutrients may promote better rest. Klodas suggests favoring foods naturally containing melatonin, magnesium, and/or potassium. Smiley recommends avoiding large, high-sugar meals late at night, as they can disrupt sleep and glucose regulation. A balanced dinner with fiber, lean protein, and healthy fats, consumed two to three hours before bed, supports steadier overnight blood sugar levels.

Expert Insight: The effects of chronic sleep deprivation on the cardiovascular system are often subtle and may not be immediately felt, but the cumulative strain can quietly age arteries, increase plaque buildup, and raise the risk of heart attack, and stroke.

Frequently Asked Questions

How does sleep deprivation affect blood pressure?

Sleep deprivation elevates sympathetic tone, which is the “fight or flight” portion of your nervous system, leading to increased blood pressure. Over time, this forces the heart to work harder and can damage arteries.

What role does inflammation play in the link between sleep and heart health?

Insufficient sleep is associated with elevated inflammatory markers, which damage the lining of blood vessels and accelerate plaque formation, increasing cardiovascular risk.

What is the recommended amount of sleep per night?

Experts suggest aiming for seven to nine hours of sleep per night, although individual needs may vary.

Considering the profound impact sleep has on cardiovascular health, what small changes could you make tonight to prioritize a more restful sleep?