Posts

Showing posts with the label sleep

Leptin can help you lose weight?

Image
Leptin is a small hormone produced by the adipose tissues (fat cells) in our body and functions as a signal for the amount of fat present in the body. Depending on the 'Leptin' signal received, the brain can instruct our stomach to stop demanding food or our mouth to stop eating, thereby reducing food intake. So, in theory, more the amount of leptin in your body, lesser will you eat and it would be a a breeze to keep your weight in control. Of course, there is a catch.
The effect of Leptin was discovered in 1994 in a study involving voraciously eating obese mice. When these mice were given leptin injections, their craving for food dropped and they returned to normal body weight. So, scientists attempted to cure obesity in humans with the help of leptin injections. But, during trials, large amounts and frequent doses of leptin had to be injected to gain significant weight loss in highly obese patients. Also, large doses resulted in redness of skin at the site of injection for c…

Sleep, to stay Alert!

Image
Its official, a good night sleep is not just an important element in your beauty regime, it is also essential to keep you active and alert. A study at the Brigham and Women’s Hospital indicated that lack of sleep not only leads to lethargy, but also affects complex visual search tasks adversely! Activities like power plant monitoring, air-traffic control and baggage screening, which are safety-sensitive, are often affected by lack of sleep. These activities demand a process of repeated retrieval of visual information and quick memory encoding along with a good amount of decision making related to the acquired information.
In this study, 12 participants were scheduled to sleep for about 10 hours every night in the beginning and then for about 5 hours, with sleep times in a 28-hour cycle, similar to someone suffering of acute jet lag. It was thus recorded that the time taken by the participants to perform visual search computer tasks was more when there was a lack of sleep. Along with th…