Study: overweight more common among early-maturing girls, especially minorities
...he said. "Also,we know that earlier-maturing girls tend to become sexually active earlier than other girls." The UNC-based National Longitudinal Study of Adolescent Health, also known as Add Health, is the largest study of U.S. adolescents ever conducted. Data from the larger study, led by Drs. J. R...Eating less may protect nerve cells
... have found that animals on very low-calorie diets tend to live longer and are more resistant both to natural diseases and stress-related disorders. Preliminary research has suggested that restricting calories can protect certain brain structures from damage, but Neufeld and colleagues are the first to te......ds (located at 46 degrees south latitude). Females tend to forage in subtropical and tropical waters to the north, where winds are lighter. Fledglings forage farther north in even lighter wind conditions than adults of either sex. Albatrosses in general have high wing loading compared to most other birds......y stable molecular tag, unlike current probes that tend to alter the structure or somehow destabilize any protein to which they are attached. A patent application has been filed for select catalytic RNA molecules, a method of constructing them and a method for identifying aminoacylating molecules. Ever...Rockefeller researchers identify defense system in plants
... drought. Dry, salty lands in developing countries tend to dampen food productivity, hence tougher crops that are less sensitive to arid conditions might prove beneficial. "Our work reveals a novel level of complexity in the early growth process and suggests that it may be possible to manipulate plants ...Small streams contribute far more than previously thought to cleaning waterways
... "Many people study nitrogen cycling, but they all tend to do their own experiments. Collaboration is the key to developing a general understanding of ecosystems." Peterson notes that, collectively, the new studies provide a radically different picture of the role of small streams in contributing...Dietary fibre supplements may be harmful
...h worlds," writes Dr Goodlad. This is because they tend to be fermented rapidly, leading to a massive and potentially dangerous surge in the numbers of bacteria that colonise the colon. The actions of fibre on the gut are complex, says Dr Goodlad, and we should be wary of oversimplifying. But we should a...Older fathers more likely to have children with schizophrenia
...ficits in the illness, so evolution would normally tend to decrease the proportion of individuals with the disease, unless new cases kept arising through new mutations. A related fact is that schizophrenia's incidence is strikingly consistent across human populations - about one percent of individuals in ...A stomach enzyme deficit may place women at more risk from drinking alcohol
... sizes are standard. Another reason is that women tend to have more fatty tissue as a percentage of their body weight than men do. Fat is inversely related to body water. Because alcohol is more soluble in water than in fat, the alcohol is distributed throughout a lower water volume in women, resulting...A neurogenetic approach to alcoholism
...nxious and potentially aggressive. These subjects tend to drink more alcohol - most likely to calm down - and they have less negative effects from alcohol intake." Having fewer negative effects from drinking alcohol means the same thing as having a low response to alcohol; these are people who can 'drin...Researchers prove past cooling trend caused by move from forests to agriculture
...d have been the result of human activity. Forests tend to look dark from the sky, but agricultural lands, with their amber waves of grain, tend to look much lighter. Dark colors tend to absorb sunlight, and light colors tend to reflect sunlight...Monogamy appears to be unnatural in the natural world
...ce for monogamy in human history is sketchy. Males tend to be opportunistic and have sex out of marriage because it is available and pleasurable. For women it is a way of obtaining something better than their mate, someone who may be richer, more handsome or more powerful, they said. While there is no hi...Proteins are vastly more complicated than previously realized
... former UW graduate student Andre Krammer. "People tend to think of protein function as biochemical chemicals binding to the protein, for example. Only recently have people realized that mechanical tension cells pulling on the matrix is important," says David Craig, a graduate bioengineering student an...So just how many genes do we have?
...tches that resemble known genes. But the programs tend to throw up lots of genes that don't really exist. To avoid counting these, Celera and the consortium demanded evidence that gene candidates really are transcribed to make the messenger RNAs that cells use to make proteins. "But we only have transcri......hered and put through their paces in the lab, they tend to get a bit cranky. But they have the most sensitive noses on the planet, fantastic internal gyros, the most complex visual system known, and muscles so powerful they can instantly lift twice their own body weight. So, scientists are willing to pu...Study looks at causes, consequences of sex differences
...spheres of the brain for language tasks, while men tend to use mainly the left hemisphere. Therefore, women are more likely to recover speech after a left-brain stroke, while it is much more difficult for men to recover from it. And women are nearly twice as vulnerable to diseases caused by tobacco smoke ...Deregulation will cause significant fluctuations in electricity prices, new study reveals
...f nitrogen oxide pollutants from power plants will tend to remain relatively stable over the next decade if no new policies are implemented to retard their growth. In contrast, sulfur dioxide emissions are expected to decline over the decade, as generators try to meet federal SO2 caps imposed by Congress....Scientists find link between Indian caste rank and genetic similarity to Europeans
...genetic similarities between Indians and Europeans tend to increase with caste rank. Intriguingly, the scientists found different trends when comparing maternally inherited (mitochondrial) variations and paternally inherited (Y chromosome) variations. Maternally inherited DNA in Indian populations was o...Breast-fed babies less likely to be overweight children, teens
...ically among children and adults. Overweight teens tend to have higher blood pressure and cholesterol, lower self esteem, and on average fare less well in school and earn less as young adults. They also are much more likely to grow into obese adults who face serious health consequences, such as heart dise...