Washington - Why does eating feel so good? The secret may lie in the head, not in the stomach, U.S. researchers reported on Thursday.
Tests on rats show that the appetite hormone ghrelin acts on pleasure receptors in the brain.
Health & Wellness
Diet products make people eat more, says nutritional toxicologist Peter Dingle.
He said some sweeteners in diet products were linked with stimulating appetite.
"Aspartame, commonly known as the sweetener NutraSweet, is a neuro-stimulant linked with stimulating appetite, so it can make you hungry," Prof Dingle, associate professor in health and the environment at Murdoch University, said.
He said some sweeteners in diet products were linked with stimulating appetite.
"Aspartame, commonly known as the sweetener NutraSweet, is a neuro-stimulant linked with stimulating appetite, so it can make you hungry," Prof Dingle, associate professor in health and the environment at Murdoch University, said.
People who eat a "Mediterranean" diet rich in fruits, vegetables, olive oil, legumes, cereals and fish have a lower risk of developing Alzheimer';s disease, U.S. researchers report.
"We have confirmed the association of a Mediterranean diet with Alzheimer's disease," said lead researcher Dr. Nikolaos Scarmeas, an assistant professor of neurology at Columbia University Medical Center in New York.
This benefit does not appear to be due to the diet's effect on blood vessels, Scarmeas added. "The diet could be helping avoid Alzheimer's disease by protection from oxidative stress or by reducing inflammation in the brain," he said.
"We have confirmed the association of a Mediterranean diet with Alzheimer's disease," said lead researcher Dr. Nikolaos Scarmeas, an assistant professor of neurology at Columbia University Medical Center in New York.
This benefit does not appear to be due to the diet's effect on blood vessels, Scarmeas added. "The diet could be helping avoid Alzheimer's disease by protection from oxidative stress or by reducing inflammation in the brain," he said.
Washington - The same brain circuits are involved when obese people fill their stomachs as when drug addicts think about drugs, a finding that suggests overeating and addiction may be linked, U.S. researchers reported on Monday.
The finding may help in creating better treatments for obesity -- a growing problem in the United States and elsewhere.
The finding may help in creating better treatments for obesity -- a growing problem in the United States and elsewhere.
Have you ever wondered what your computer is made of? You may not want to know. An analysis by Greenpeace of the chemicals contained in the components of five types of laptop computer revealed toxic flame-retardants and other harmful chemicals in some of them. In one of the computers, Greenpeace says it found harmful chemicals that the maker has publicly claimed to have eliminated from its products.
Washington - More than a quarter of New Yorkers infected with the AIDS virus are now dying of other causes, researchers said on Monday.
An analysis of 68,669 New York City residents infected with HIV, the virus that causes AIDS, found that of those who died between 1999 and 2004, 26.3 percent died of something other than HIV. That is a 32 percent increase from 1999, when just under 20 percent of HIV patients died of other causes.
An analysis of 68,669 New York City residents infected with HIV, the virus that causes AIDS, found that of those who died between 1999 and 2004, 26.3 percent died of something other than HIV. That is a 32 percent increase from 1999, when just under 20 percent of HIV patients died of other causes.
The type of ultrasound used to scan babies in the womb disturbs brain cells in mouse fetuses, say researchers. The finding fuels a debate about the safety of the technique for unborn babies.
Babies in the womb are routinely scanned using high-frequency sound waves. The scans allow doctors to check on growth rates and spot developmental abnormalities.
Babies in the womb are routinely scanned using high-frequency sound waves. The scans allow doctors to check on growth rates and spot developmental abnormalities.
An anaesthetic can treat depression within hours, US research suggests. The study involving 17 patients found ketamine - used as an anaesthetic but also taken as a recreational drug - relieved symptoms of depression.
Most existing treatments for depression take weeks or even months to relieve people's symptoms.
But the team, writing in Archives of General Psychiatry, said ketamine would need to be altered so it lost its existing hallucinatory side-effects.
Most existing treatments for depression take weeks or even months to relieve people's symptoms.
But the team, writing in Archives of General Psychiatry, said ketamine would need to be altered so it lost its existing hallucinatory side-effects.
London - One of six men who fell violently ill in March during clinical trials of a new drug has been told by his doctors that he is showing early signs of cancer, a newspaper has reported.
David Oakley, 35, from London, has been told by doctors that he is showing "definite early signs" of lymph cancer, the Mail on Sunday reported.
He has also been warned that he faces the risk of multiple sclerosis, lupus, ME, rheumatoid arthritis and other illnesses.
David Oakley, 35, from London, has been told by doctors that he is showing "definite early signs" of lymph cancer, the Mail on Sunday reported.
He has also been warned that he faces the risk of multiple sclerosis, lupus, ME, rheumatoid arthritis and other illnesses.
When Gina O'Brien decided she no longer needed drugs to quell her anxiety and panic attacks, she followed doctor's orders by slowly tapering her dose of the antidepressant Paxil. The gradual withdrawal was supposed to prevent unpleasant symptoms that can result from stopping antidepressants cold turkey. But it didn't work.
"I felt so sick that I couldn't get off my couch," O'Brien said. "I couldn't stop crying."
Overwhelmed by nausea and uncontrollable crying, she felt she had no choice but to start taking the pills again. More than a year later the Michigan woman still takes Paxil, and expects to be on it for the rest of her life.
"I felt so sick that I couldn't get off my couch," O'Brien said. "I couldn't stop crying."
Overwhelmed by nausea and uncontrollable crying, she felt she had no choice but to start taking the pills again. More than a year later the Michigan woman still takes Paxil, and expects to be on it for the rest of her life.
