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Close the blinds during sleep to protect your health: Even moderate light exposure during sleep harms heart health and increases insulin resistance -- ScienceDaily
"We showed your heart rate increases when you sleep in a moderately lit room," said Dr. Daniela Grimaldi, a co-first author and research assistant professor of neurology at Northwestern. "Even though you are asleep, your autonomic nervous system is activated. That's bad. Usually, your heart rate together with other cardiovascular parameters are lower at night and higher during the day."
There are sympathetic and parasympathetic nervous systems to regulate our physiology during the day and night. Sympathetic takes charge during the day and parasympathetic is supposed to at night, when it conveys restoration to the entire body.
How nighttime light during sleep can lead to diabetes and obesity
Investigators found insulin resistance occurred the morning after people slept in a light room. Insulin resistance is when cells in your muscles, fat and liver don't respond well to insulin and can't use glucose from your blood for energy. To make up for it, your pancreas makes more insulin. Over time, your blood sugar goes up.
The Journalist and the Pharma Bro
At home later that night, she couldn’t sleep; her Fitbit measured her resting heart rate at 10 beats higher for a week afterward. “I still was in denial about it, but this really hit me hard,” she says of Shkreli’s sudden jailing.
Past your bedtime? Inconsistency may increase risk to cardiovascular health -- ScienceDaily
Researchers at the University of Notre Dame studied the correlation between bedtime regularity and resting heart rate (RHR) and found that individuals going to bed even 30 minutes later than their usual bedtime presented a significantly higher resting heart rate that lasted into the following day.
"We already know an increase in resting heart rate means an increased risk to cardiovascular health," said Nitesh Chawla, the Frank M. Freimann professor of Computer Science and Engineering at Notre Dame, director of the Center for Network and Data Science and a lead author of the study. "Through our study, we found that even if you get seven hours of sleep a night, if you're not going to bed at the same time each night, not only does your resting heart rate increase while you sleep, it carries over into the next day."
Harnessing wearable device data to improve state-level real-time surveillance of influenza-like illness in the USA: a population-based study - The Lancet Digital Health
Our mchange models were better at predicting change with a 1-week lag compared with a 1-week lead. It is possible that an ILI infection results in an elevated RHR for several weeks after initial infection. Previous studies have also indicated that an elevated heart rate can occur before symptom onset.16 Since influenza has an incubation period of 1–4 days, there is only a short opportunity to identify infections before symptom onset. However, since individuals with febrile respiratory illness typically seek care 3–8 days after symptom onset,18 it is conceivable that ILI cases could be identified via sensor data earlier than through traditional, clinic-based ILI surveillance. Early identification via our method might be more likely if rates were predicted at a daily, rather than weekly, rate.
Harnessing wearable device data to improve state-level real-time surveillance of influenza-like illness in the USA: a population-based study - The Lancet Digital Health
The impact of infections on an individual's RHR has been documented in several studies. One study found ill participants had RHRs that were elevated by 2·02–4·66 SD above their normal measurements.16 A study that examined 27 young men with acute febrile infections found that heart rates increased by 8·5 bpm per every 1°C increase in temperature.11 Similarly, a study among children with acute infections found that heart rate rose by 9·9–14·1 bpm for every 1°C increase in temperature, with higher increases in younger children.17 These studies indicate that infections can increase heart rate, probably due to increased body temperature and inflammatory responses as the body fights off an infection.
AI technique detects heart failure from a single heartbeat with 100% accuracy - ScienceBlog.com
Dr Massaro said: “We trained and tested the CNN model on large publicly available ECG datasets featuring subjects with CHF as well as healthy, non-arrhythmic hearts. Our model delivered 100% accuracy: by checking just one heartbeat we are able detect whether or not a person has heart failure. Our model is also one of the first known to be able to identify the ECG’ s morphological features specifically associated to the severity of the condition.”
Mid-life resting heart rate of 75 plus beats/minute linked to doubling in early death risk: And rise in rate for those in their 50s linked to heightened heart disease risk over next 11 years -- ScienceDaily
But a resting heart rate of 75+ bpm in 1993 was nevertheless associated with around a twofold higher risk of death from any cause, from cardiovascular disease, and from coronary heart disease, compared with a resting heart rate of 55 or below.
And a resting heart rate that was stable between 1993 and 2003, when the men were aged 50 to 60, was associated with a 44 per cent lower risk of cardiovascular disease over the next 11 years compared with a resting heart rate that had increased over this period.
What's more, every additional beat increase in rate was associated with a 3 per cent higher risk of death from any cause, a 1 per cent higher risk of cardiovascular disease, and a 2 per cent higher risk of coronary heart disease.
