Jillian Wilson is the senior wellness reporter at HuffPost, where she covers mental health, physical health and debunks the health misinformation that's so rampant online.
and actually turn your phone off before bed. While exposing yourself to light during the nighttime may seem innocent, it could potentially be harmful for your health. Exposure to artificial light at night is linked to higher rates of cardiovascular disease , according to recent research published in the journal.
Specifically, experts saw a greater risk of heart failure, coronary artery disease, atrial fibrillation, myocardial infarction and stroke.Researchers tracked one week of nighttime light exposure among 88,905 adults over 40, who wore wrist sensors to measure their exposure from 12:30 a.m. to 6 a.m. Participants were broken into four percentiles from least amount of nighttime light exposure to most. Researchers then looked at their heart health data over the course of 9.5 years and adjusted for established cardiovascular risk factors such as smoking, physical activity, shift work and socioeconomic status. When compared to those who experienced the lowest amounts of light exposure during the night, people with high exposure had the worst health outcomes. Those who had high light exposure during the night saw a 56% higher chance of developing heart failure, up to a 56% greater risk of heart attack and up to a 30% greater risk of stroke.Researchers deduce the negative health effects of nighttime light exposure have to do with the circadian rhythm, which is our body’s 24-hour sleep-wake cycle. “We know that the circadian rhythm ... is really an important part of healthy lifestyle and that disruptions in that ... sleep-wake style cycle can be associated with cardiovascular events,” saidExposure to nighttime light can trick the brain into thinking it’s daytime, which disrupts the normal circadian rhythm patterns, Slivnick explained.“I think light exposure translates to a disturbance in the circadian rhythm, which may or may not impact sleep duration, but certainly affects overall sleep health, which is a combination of not just how long, but how well one sleeps on a regular basis,” said, an associate professor of cardiovascular medicine at Yale School of Medicine in Connecticut. Aneni is also not affiliated with the study.. If you’re waking up tired or with headaches, you may be experiencing sleep issues that are worth chatting with your doctor about. Bad sleep is associated with “a variety of cardiovascular and cardio metabolic conditions,” Aneni said. “For instance, there is evidence to show that short sleep duration is associated with increased risk of heart attacks and strokes, andSleep is also our body’s “recharging mechanism,” Slivnick said. “Reduction in sleep can increase stress, anxiety and increase the body’s fight or flight mechanisms, and these mechanisms can stress the heart, particularly over prolonged periods of time, which can predispose to cardiovascular risk.”“What else stuck with me was the fact that it seems like the association was more prominent among women relative to men,” Aneni said. Study authors wrote that this finding is consistent with other research, which found women are more sensitive to light-based circadian rhythm disruptions and that women who do overnight shift work have higher heart failure rates than men.There are limitations to the study. For one, researchers don’t know the exact source of the light people were exposed to at night, so it’s unknown whether they were affected by street lights, TV screens, tablets, phones or something else. There also wasn’t much diversity in the cohort; 97% of participants were white. “I’m hoping that there are more studies like this confirming these findings and directly being able to explain why this night light exposure is leading to heart disease — and I bet that the answers would lie within the quality and the quantity of sleep,” Aneni said.New research shows that exposure to light at night puts folks at higher risk of cardiovascular issues such as heart failure.Practice good sleep hygiene ― including eliminating nighttime light exposure ― to get quality sleep. While more research is needed to determine the exact ways that nighttime light is linked to cardiovascular health, limiting your exposure is a good way to minimize your risk of heart disease. “We have a population that does not really sleep as well as they should, and does not value sleep as much,” Aneni said.“The healthier your sleep is, the healthier you are,” Aneni added. “And, in terms of cardiovascular disease, the healthier sleep you get, the lower your cardiovascular disease risk.” Beyond turning off lights when you sleep, limiting bright lights from screens before bed and prioritizing rest, there are other things you can do for better heart health.We remain committed to providing you with the unflinching, fact-based journalism everyone deserves. Thank you again for your support along the way. We’re truly grateful for readers like you! Your initial support helped get us here and bolstered our newsroom, which kept us strong during uncertain times. Now as we continue, we need your help more than ever.Thank you again for your support along the way. We’re truly grateful for readers like you! Your initial support helped get us here and bolstered our newsroom, which kept us strong during uncertain times. Now as we continue, we need your help more than ever.Eating a nutritious diet that’s high in vegetables, lean protein, fruit, nuts and seeds. Getting at least 120 minutes each week of moderate intensity exercise or 75 minutes of vigorous .“If we do those eight things, we really can do a major part at controlling our risk of having cardiovascular disease,” Slivnick said.ER Doctors Warn Heart Attack Symptoms Are Different For Women — And Not Enough People Know About ThemBy entering your email and clicking Sign Up, you're agreeing to let us send you customized marketing messages about us and our advertising partners. You are also agreeing to our
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