![]() "Secretion of hormones can change because of staying up late, our body's temperature regulation can change, and metabolism can change in a negative way," Kianersi said. When sleep disrupts those rhythms, the body is out of sync. Every cell in the body has its own circadian rhythm - including when you feel hungry, when you void your bowels, when you feel energetic enough to exercise and how well your immune system works. In night owls, however, the internal body clock secretes melatonin much later, making early mornings sluggish and pushing peak activity and alertness later into the afternoon and evening.īut that's not all. If you're an innate early bird, your circadian rhythm releases melatonin much earlier than the norm, energizing you to become most active in the morning. Personal sleep chronotypes are thought to be inherited however, with some work, they can be changed. "The main takeaway is that people who have a clear evening preference should be aware of these risks, moderate their alcohol use, eliminate smoking, increase physical activity and get more sleep and manage some of these risks as best as they can," Kolla said in an email.Įveryone has an internal 24-hour body clock, or circadian rhythm, that regulates the release of the hormone melatonin to promote sleep. ![]() Bhanu Prakash Kolla, a sleep medicine specialist in the Center for Sleep Medicine at the Mayo Clinic in Rochester, Minnesota. "Even after accounting for all lifestyle factors, there is a slight increased risk of diabetes, suggesting that there could be some genetic predisposition accounting for both the diabetes and the evening preference or potentially other factors that have not been accounted for," said Dr. ![]() When Kianersi and his team factored the unhealthy habits out of the data, the risk of a night owl developing type 2 diabetes dropped to 19% compared with early birds, or people who like to get up and go to bed early. "Night owls overall were more likely to have a poor diet, to be less physically active, to use alcohol in higher quantities, to have an unhealthy BMI, to smoke and to sleep less or more than the seven to nine hours that's recommended each night," Kianersi said. Researchers also found strong connections between a "late-to-bed-and-rise" sleep style and some unhealthy behaviors - all known contributors to chronic diseases such as type 2 diabetes. "When we looked at the relationship between chronotype and diabetes we found night owls had a 72% increased risk of developing diabetes over the eight years of our study," said lead author Sina Kianersi, a postdoctoral research fellow at Brigham and Women's Hospital and Harvard Medical School in Boston. If so, you could be at higher risk of developing type 2 diabetes as well as a number of unhealthy lifestyle habits, a new study found. ATLANTA - If you're groggy in the morning but perky in the evening, you may be a night owl - a sleep pattern or chronotype that makes you more inclined to want to stay up late and sleep in.
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