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Showing posts with label Leptin. Show all posts
Showing posts with label Leptin. Show all posts
Thursday, 18 January 2018
Sound sleep leads to healthy weight
Sleep can foster healthier eating habits, sleeplessness is one of the lifestyle factors that can contribute to obesity. For the study, researchers led by Wendy Hall, from the department of nutritional sciences at King's College, recruited 42 people who habitually got less than seven hours of sleep a night.
Half of the people received a 45-minute personalized sleep consultation, which provided them with tips to improve their sleep. The goal was to extend their sleep by as much as an hour and a half each night. The other half received no advice and served as the control group.
All participants were equipped with a wrist-worn motion sensor that kept track of how much they slept each night, as well as the amount of time they spent in bed before falling asleep. They also kept food diaries to track what they ate. Sleep and diet were monitored for a week. Nearly 9 in 10 of the people who received advice increased their sleep time during the week. No significant changes in sleep patterns occurred among those in the control group.
Those who got more sleep wound up with a 10-gram reduction in their daily intake of added sugars, the researchers found. But over time those added sugars can add up, especially if sleeplessness also keeps a person from being more active in their daily life. Sleeplessness could influence a person's food choices-hunger-dampening hormone called leptin which is secreted when people enter the deeper stages of sleep, lack of sleep could mean that people's appetites are instead being driven by ghrelin, which is known as the "hunger hormone.''
People with insomnia tend to develop a lack of inhibition due to their sleeplessness, it becomes harder to resist certain foods and other things. For sound sleep, avoid caffeine and alcohol about four to six hours before bedtime, eat a moderate amount in the evening, so you don't go to bed too full or too hungry.
haleplushearty.blogspot.com
Friday, 14 July 2017
Facts about body fat
Fat is known as adipose tissue, it is a hormonal and metabolic processes. Adipose tissue stores energy, regulates metabolism and insulin in the body.
Body fat is divided into two; essential and storage fat. Essential fat is needed for daily activities while storage is stored under the skin.
Fat loss affects metabolism; low fat in the body will leads to low levels of leptin. Less leptin reduces metabolism.
Limiting calorie intake reduces fat and decreases appetite.
Fat can be created without food, when body needs new fat cells, stem cells will change into fat over bone or muscle cells.
Fat is stored in the body in the form of triglycerides, free fatty acid FFA. It secretes different hormones. Too much or too little fat can increase the risk of diabetes
Excess fat can increase the risk of developing cancer; fat secret hormones that aids cancer growth. Dieting can not reduce fat cells, human body has 15 to 35 billions of fat cells.
haleplushearty.blogspot.com
Saturday, 29 April 2017
How brain controls appetite
According to scientists, leptin is a hormone released by fasting tissue that reduces appetite while grelin hormone is released by stomach tissue that make us to eat more.
Professor Kazuyoshi Ukena of Hiroshima University discovered Neurosecretory Protein GL NPGL, and explained that hunger and energy systems are complex.
Professor Ukena first discovered NPGL in chickens when he discovered that growing birds grow rapidly even if they don't eat good food. Researchers at HU
performed a DNA database search and discovered that NPGL is present in vertebrates.
Professor Ukena's team fed three groups of mice, on different diets, the first set of mice- low-calorie diet for 24 hours, the second group - high fat diet for 5 weeks and the third group high fat diet for 13 weeks.
They discovered that the mice fed on a low calorie diet have an increase in NPGL expression, while the 5-week high-fat-diet group saw a large decrease in NPGL expression. Mice fed on high fat diet are not sensitive to appetite suppressing effects.
NPGL increases appetite when energy levels fall and reduces appetite during energy overload.
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