Washington, September 8 : About 30 percent of blacks hold onto too much sodium - the equivalent of eating a small order of fast food French fries or a small bag of potato chips - when stressed, researchers say.
"This response pattern puts you under a greater blood pressure load over the course of the day and probably throughout the night as well, increasing your risk of cardiovascular disease," Dr. Gregory Harshfield, hypertension researcher at the Institute of Public and Preventive Health at Georgia Health Sciences University, said.
Washington, September 8 : Untreated severe obstructive sleep apnea (OSA) is associated with an increased risk of cardiovascular mortality in the elderly, and adequate treatment with continuous positive airway pressure (CPAP) may significantly reduce this risk, a new study has claimed.
"Although the link between OSA and cardiovascular mortality is well established in younger patients, evidence on this relationship in the elderly has been conflicting," Miguel Angel Martinez-Garcia, lead author of the study from La Fe University and Polytechnic Hospital in Valencia, Spain, said.
Washington, September 8 : In a new report, researchers have revealed that using a novel surgical approach, it is possible to rebuild a functional lower jaw and mouth and preserve a patient's ability to eat and speak after removing an invasive facial tumour.
The new case study not only documents a successful surgical technique to create a fully functional lower jaw, but also reports the rare occurrence of a bone cancer known as osteosarcoma that spreads from the patient's right femur to his jaw bone.
Most commonly, osteosarcoma is found in the long bones of the leg and does not spread to other parts of the body.
Washington, September 7 : Scientists have discovered that Plasmodium vivax - the parasite that causes the most common form of malaria - share the same genetic variations, even when the organisms are separated across continents.
The discovery raises concerns that mutations to resist existing medications could spread worldwide, making global eradication efforts even more difficult.
Washington, Sep 7 - Watching a re-run of a favourite TV show may help restore your personal drive to get things done if you have used up your reserves of willpower or self-control, says a study.
"People have a limited pool of these valuable mental resources," explained Jaye Derrick, research scientist at the University of Buffalo's Research Institute on Addictions.
Washington, September 7 : As opposed to the notion that advanced maternal age has a negative impact on the health of grown-up children, researchers have claimed that the mother's education and the number of years she survives after giving birth and spends with her offspring is what actually has an impact.
It had been previously thought that mothers delivering later in life have children that are less healthy as adults, because the body of the mother has already degenerated due to physiological effects like decreasing oocyte quality or a weakened placenta.
Washington, September 7 : Men who experience childhood sexual abuse are three times more likely to have a heart attack as compared to those who were not sexually abused as children, to a new study has suggested.
For the study, researchers from the University of Toronto examined gender-specific differences in a representative sample of 5095 men and 7768 women aged 18 and over, drawn from the Center for Disease Control's 2010 Behavioral Risk Factor Surveillance Survey.
Washington, September 7 : All seniors, even those considered frail, can enjoy the benefits of exercise in terms of their physical and cognitive faculties and quality of life, according to a new study.
But these benefits appear after only three month, said Dr. Louis Bherer, PhD (Psychology), Laboratory Director and Researcher at the Institut universitaire de geriatrie de Montreal (IUGM), an institution affiliated with Universite de Montreal, who carried out the study.
This discovery is excellent news, as increased life expectancy has also increased the number of frail seniors in our communities.
Washington, September 7 : In a new study, men with high risk for heart disease had lower blood pressure after drinking non-alcoholic red wine every day for four weeks.
Non-alcoholic red wine increased participants' levels of nitric oxide, which helped decrease both systolic and diastolic blood pressure, according to researchers.
Nitric oxide is a molecule in the body that helps blood vessels relax and allows more blood to reach your heart and organs.
Washington, September 6 : Men and women clearly have different strategies for picking sexual partners.
And some psychologists have suggested that evolutionary adaptations have programmed these preferences in our brains, but a new study suggests that evolution is only part of the answer.
To be a ‘success’ in evolutionary terms, women need to have access to resources for raising offspring, and men need to have access to fertile females.
Washington, September 6 : Researchers have discovered how the chemical properties of China's favourite drink green tea affect the generation of brain cells, providing benefits for memory and spatial learning.
It has long been believed that drinking green tea is good for the memory.
"Green tea is a popular beverage across the world," Professor Yun Bai from the Third Military Medical University, Chongqing, China, said.
"There has been plenty of scientific attention on its use in helping prevent cardiovascular diseases, but now there is emerging evidence that its chemical properties may impact cellular mechanisms in the brain," Bai said.
Washington, Sep 6 : The massive Encyclopaedia of DNA Elements (ENCODE) reveals a human genome infinitely richer and more complex than envisioned even a decade ago, including how much of mom and dad are genetically active in each of us.
The lab of Mark Gerstein, professor of biomedical informatics at Yale University, has found order amid the seeming chaos of trillions of potential molecular interactions. Scientists show it is not just the gene, but the network that makes the human genome dynamic.
Washington, September 6 : Working in a mouse model, scientists at Washington University School of Medicine in St. Louis, have found that when the first signs of Alzheimer's plaques appear in the brain, the normal sleep-wake cycle is significantly disrupted.
So they suggest that sleep disruptions may be among the earliest indicators of Alzheimer's disease.
Washington, September 6 : Researchers have found that children exposed to diethyl phthalate (DEP) and butylbenzyl phthalate (BBzP)-phthalate chemicals commonly found in personal care and plastic products-have elevated risk of asthma-related airway inflammation.
Of the 244 children aged 5 to 9 in the study, all had detectable levels of phthalates in their urine although these varied over a wide range.
Higher levels of both phthalates were associated with higher levels of nitric oxide in exhaled breath, a biological marker of airway inflammation.
Washington, September 6 : Study in female mice has shed light on why women are more likely than men to gain fat in the abdomen after eating excess saturated fat.
It could also explain why women gain fat following menopause.
Scientists identified events in female mice that start with the activation of an enzyme and end with the formation of visceral fat - fat that accumulates around internal organs and is linked to a higher risk for Type 2 diabetes, heart disease and cancer.
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