A study, recently published in the European Heart Journal, suggests that excessive sleep, as well as insufficient sleep, may cause the risk of cardiovascular issues and premature death.
For the study, the researchers examined the sleeping habits of more than 116,000 aged between 35 and 70 years enrolled in the Prospective Urban Rural Epidemiology (PURE) study.
Having analyzed the received data, the researchers concluded that people who slept 9–10 hours were 17% more likely to die or develop cardiovascular conditions. People who regularly slept for more than 10 hours had a 41% risk to die prematurely or develop cardiovascular conditions.
Corresponding author Dr. Salim Yusuf, the principal investigator of the PURE study and a professor of medicine at McMaster, comments the results of the study: “The general public should ensure that they get about six to eight hours of sleep a day. On the other hand, if you sleep too much regularly, say more than nine hours a day, then you may want to visit a doctor to check your overall health.”
A new study that included about one million people in Britain finds that people who wake up late, so-called night owls, have 10% higher risk of dying sooner than people who rise and set with the sun.
For the study, the scientists have analyzed information on more than 430,000 people aged from 38 to 73 from a public database, who defined themselves as “definitely a morning person” (27%), “more a morning person than evening person” (35%), “more an evening person than a morning person” (28%), or “definitely an evening person” (9%).
One of the authors of the study Kristen Knutson of Northwestern University in Chicago says: “The higher risk may be because people who up late have an internal biological clock that doesn’t match their external environment. It could be psychological stress, eating at the wrong time for the body, not exercising enough, not sleeping enough, being awake at night by yourself, maybe drug or alcohol use.”
According to a study, conducted by the scientists from Uppsala University, Sweden, dogs may considerably reduce our risk of premature death.
For the study, a team of scientists analyzed the data received from more than 3.4 million adults and found that people in multi-person and single-person households who owned a dog had 11% and 33% lower risk of all-cause death respectively than those without dogs.
The researchers conclude in their study: “Taken together, we believe our longitudinal population-wide design provides the most robust evidence so far of a link between dog ownership and health outcomes, although bias from reverse causation, misclassification, and confounding cannot be excluded.”
A new study from Harvard University discovered that one brisk walk at least once a week can reduce a senior women’s risk of early death by 70%.
For the study, a team of researchers analyzed data from more than 17,000 women aged over 70. The analysis showed that more moderate to vigorous intensity physical activity – such as brisk walking – associated with around 60–70% lower risk of death at the end of the study.
The first author of the study Prof. I-Min Lee from Harvard University’s medical and public health schools in the US says: “We hope to continue this study in the future to examine other health outcomes, and particularly to investigate the details of how much and what kinds of activity are healthful.”
According to a new research, a high intake of coffee, at least four cups of coffee a day, may cut the risk of premature death.
A team of scientists examined data from the Seguimiento Universidad de Navarra (SUN) Project, a large long-term study started in 1999. The project recruited 19,896 university graduates and followed them up with diet and lifestyle questionnaires every 2 years over a 10-year period.
The research found that those participants who had at least four cups of coffee a day had 65% lower risk of dying from all causes compared to those who said they never or almost never drank coffee.