Showing posts with label Increases. Show all posts
Showing posts with label Increases. Show all posts

Saturday, July 14, 2012

Weight gain induced by high-fat diet increases active-period sleep and sleep fragmentation

ScienceDaily (July 10, 2012) — Research presented at the Annual Meeting of the Society for the Study of Ingestive Behavior (SSIB) finds that prolonged exposure to a high-fat diet reduces the quality of sleep in rats.

See Also:Health & MedicineSleep Disorder ResearchDiet and Weight LossInsomnia ResearchObesityCholesterolNutritionReferenceCircadian rhythm sleep disorderSleep deprivationSeparation anxiety disorderRapid eye movement

Using radio-telemetry, the authors measured 24-hour sleep and wake states after rats consumed a high fat diet for 8 weeks. Compared to rats that consumed a standard laboratory chow, the rats on the high-fat diet slept more but sleep was fragmented. The increased sleep time of the rats on the high-fat diet occurred mainly during the normally active phase of the day, resembling excessive daytime sleepiness observed in obese humans.

According to lead author, Catherine Kotz, "Studies in humans indicate a relationship between sleep quality and obesity. Our previous work in animals shows a link between good quality sleep, resistance to weight gain and increased sensitivity to orexin, a brain chemical important in stabilizing sleep and wake states. The current studies show that after high-fat diet-induced weight gain in rats, sleep quality is poor and orexin sensitivity is decreased. These findings suggest that poor sleep associated with weight gain due to a high-fat diet may be a consequence of reduced orexin sensitivity."

These studies highlight the impact of weight gain on sleep quality and a potential brain mechanism underlying these diet and weight-gain induced changes in sleep behavior.

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Wednesday, July 4, 2012

Fast food intake increases risk of diabetes and heart disease in Singapore

ScienceDaily (July 2, 2012) — The dangers of fast food are well documented; the portions are often larger and the food is generally high in calories and low in nutrients. Now, University of Minnesota School of Public Health researchers have examined the eating habits of residents in Singapore and found new evidence that a diet heavy in fast food increases the risk of developing Type 2 diabetes and coronary heart disease.

See Also:Health & MedicineDiet and Weight LossNutritionDiabetesStaying HealthyCholesterolHealth PolicyReferenceOily fishFast foodHealth benefits of teaBran

The latest research, published online July 2 by the American Heart Association's journal Circulation, found that people who consume fast food even once a week increase their risk of dying from coronary heart disease by 20 percent in comparison to people who avoid fast food. For people eating fast food two-three times each week, the risk increases by 50 percent, and the risk climbs to nearly 80 percent for people who consume fast food items four or more times each week.

Eating fast food two or more times a week was also found to increase the risk of developing Type 2 diabetes by 27 percent.

According to University of Minnesota researchers, the few existing studies on the association of fast food and metabolic risk have looked almost exclusively at Western-Caucasian populations from the United States.

"We wanted to examine the association of Western-style fast food with cardio-metabolic risk in a Chinese population in Southeast Asia that has become a hotbed for diabetes and heart disease," said the study's lead researcher, University of Minnesota post-doctoral researcher Andrew Odegaard, Ph.D., M.P.H. "What we found was a dramatic public health impact by fast food, a product that is primarily a Western import into a completely new market."

To arrive at their results, School of Public Health researchers worked alongside researchers from the National University of Singapore. Together, they examined results of a study conducted over a period of 16 years beginning in 1993, which looked at the eating habits of 52,000 Chinese residents of Singapore who have experienced a recent and sudden transition from traditional foods to Western-style fast food.

"What's interesting about the results is that study participants who reported eating fast food most frequently were younger, better educated, smoked less and were more likely to be physically active," said Odegaard. "This profile is normally associated with lower cardio-metabolic risk."

According to the study's senior researcher, Mark Pereira, Ph.D., M.P.H., of the School of Public Health's Division of Epidemiology and Community Health, the new research provides an important perspective on global health and the nutrition transfer when cultures developing in different parts of the world start moving away from their traditional diet and mode of exercise.

"The big picture is that this

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Friday, June 29, 2012

Bacterial Vaginosis Increases Female-to-Male HIV Transmission Risk

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Wednesday, May 16, 2012

NuvaRing Increases Risk of Blood Clots

This story comes from the Yahoo! Contributor Network, where individuals publish their unique perspectives on some of the world’s most popular websites.Do you have a story to tell? Become a Yahoo! contributor FIRST PERSON

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NuvaRing Increases Risk of Blood Clots

This story comes from the Yahoo! Contributor Network, where individuals publish their unique perspectives on some of the world’s most popular websites.Do you have a story to tell? Become a Yahoo! contributor FIRST PERSON

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Friday, April 13, 2012

Breast Cancer, Being Overweight Increases The Risk

Vitamin D And Breast Cancer Is there a link between Vitamin D and breast cancer? Does Vitamin D help to reduce your risk of breast cancer? There has been a lot of talk about the role of Vitamin D and cancer prevention, but there has actually been substantial evidence in recent years to show that… By: Meschino Health in  Health and Fitness  >  Womens Issues   Feb 22, 2012   0   Likes: 0



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