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New York, Nov 11 (IANS) People who sleep five or fewer hours a night are likely to drink significantly more sugary caffeinated drinks, such as sodas and energy drinks, according to a new study
"We think there may be a positive feedback loop where sugary drinks and sleep loss reinforce one another, making it harder for people to eliminate their unhealthy sugar habit," said Aric A. Prather, assistant professor at the University of California San Francisco.
"This data suggests that improving people's sleep could potentially help them break out of the cycle and cut down on their sugar intake, which we know to be linked to metabolic disease," Prather added.
To understand whether this is a more general pattern in the adult population, the researchers in the study published in the journal Sleep Health analysed the records of around 18,000 participants.
The study included participants' reports of how much sleep they usually got during the work week, as well as their total consumption of various beverages, including caffeinated and non-caffeinated sugar-sweetened beverages, fruit juice, drinks with artificial sweeteners, and plain coffee, tea and water.
The researchers found that people who regularly slept five or fewer hours per night also drank 21 per cent more caffeinated sugar-sweetened beverages -- including both sodas and non-carbonated energy drinks -- than those who slept seven to eight hours a night.
People who slept six hours per night regularly consumed 11 per cent more caffeinated sugar-sweetened beverages. On the other hand, the team found no association between sleep duration and consumption of juice, tea or diet drinks.
"Sleeping too little and drinking too many sugary drinks have both been linked to negative metabolic health outcomes, including obesity," Prather added.
Enhancing the duration and quality of sleep could be a useful new intervention for improving the health and well-being of people who drink a lot of sugary beverages, the study suggests
London, Nov 10 (IANS) If you exercise before work, or forego fried food for fruits and salads, you can expect brain functions to improve over time, according to a new study.
Living a healthier lifestyle could increase executive function, which is the ability to exert self-control, set and meet goals, resist temptation and solve problems, the study said.
"People who make a change to their health behaviour, like participating in physical activity, eating less processed food, or consuming more fruits and vegetables, can see an improvement in their brain function over time and increase their chances of remaining healthy as they age," said one of the researchers Julia Allan from University of Aberdeen in Britain.
The researchers analysed the relationship between physical activity and executive function, adjusting for other variables such as age, gender, education, wealth and illness and found evidence that the relationship between the two is bidirectional.
Specifically, individuals with poor executive function showed subsequent decreases in their rates of participation in physical activity and older adults who engaged in sports and other physical activities tended to retain high levels of executive function over time.
Researchers noted that while the study, published in the journal Frontiers in Neuroscience, focused on physical activity and its relationship to executive function, it is likely a positive feedback loop also exists between executive function and eating nutritious foods.
Similarly, it is likely that negative feedback loops also exist, in that unhealthy behaviours such as smoking or drinking too much alcohol will be both a result of and a predictor of declining executive function, the researchers said.
New York, Nov 10 (IANS) If you want to improve your sleep, better cut down on smartphone use near bedtime, suggests a new study that found longer average screen-time is associated with poor sleep quality and less sleep overall.
Poor sleep is associated with health conditions such as obesity, diabetes and depression.
"Exposure to smartphone screens, particularly around bedtime, may negatively impact sleep," the study said.
For the study, Matthew Christensen from the University of California - San Francisco, US, and colleagues sought to test the hypothesis that increased screen-time may be associated with poor sleep by analysing data from 653 adult individuals across the US.
Participants installed a smartphone application which recorded their screen-time, defined as the number of minutes in each hour that the screen was turned on, over a 30-day period.
They also recorded their sleeping hours and sleep quality.
The researchers found that each participant totalled an average of 38.4 hours over this period, with smartphones being activated on average for 3.7 minutes in each hour.
Longer average screen-time was associated with poor sleep quality and less sleep overall, particularly when smartphones were used near participants' bedtime, according to the study published in the journal PLOS ONE.
New York, Nov 10 (IANS) Individuals who regularly consume sugar-sweetened beverages such as soda, colas and other carbonated beverages, and non-carbonated fruit drinks such as lemonade and fruit punch, may be at an higher risk of developing prediabetes, new research has revealed.
Prediabetes is a condition in which blood sugar is high, but not high enough to be Type 2 diabetes. If diagnosed early, it is reversible through lifestyle changes such as diet and exercise.
"Our results suggest that high sugar-sweetened beverage intake increases the chances of developing early warning signs for Type 2 diabetes," said Nicola McKeown, Associate Professor at the Tufts University, Massachusetts in the US.
"If lifestyle changes are not made, individuals with prediabetes are on the trajectory to developing diabetes," McKeown added.
The findings showed that adults who drink a can of soda per day or a median of six 12 fluid ounce servings a week are at 46 per cent higher risk of developing prediabetes.
Further, the highest consumers of sugar-sweetened beverages had nearly eight per cent higher insulin resistance scores, compared to low- or non-consumers.
On the other hand, diet soda -- defined as low-calorie cola or other carbonated low-calorie beverages -- intake was found with no associations with risk for either prediabetes or insulin resistance, the study said.
However, and further studies are needed to reveal the long-term health impact of artificially sweetened drinks, the researchers noted.
Intake of sugar-sweetened beverage should be limited, or replaced with healthier alternatives such as water or unsweetened coffee or tea, McKeown recommended.
For the study, the researchers analysed 1,685 middle-aged adults over a period of 14 years, who did not have diabetes or prediabetes during an initial baseline examination.
The findings were published in the Journal of Nutrition.