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Tag: "risky" at biology news

Lessons from the orangutans: Upright walking may have begun in the trees

...they have to go to the ground, which is incredibly risky because the Sumatran tiger is down there licking its lips. The Sumatran orangutan population is predicted to be extinct in the next decade if habitat degradation continues. Our research further highlights the need for protecting these animals," she s...

Why do oysters choose to live where they could be eaten?

...s will eat larvae of the same species, and (3) how risky is gregarious settlement among cannibals. Using a series of laboratory experiments and field surveys, Tamburri has demonstrated that oyster larvae are attracted from a distance by the scent of adults from the same species. Yet, death for a larvae...

Circumcision: A proven strategy to prevent HIV

...g HIV infected and may be more likely to engage in risky behavior. "Circumcision is by no means a natural condom," said Bailey. "We do know that some circumcised men become infected with HIV. But we did find that the circumcised men in our study did not increase their risk behaviors after circumcision. ...

UCLA: How does your brain respond when you think about gambling or taking risks?

... not survive the operation? Should you invest in a risky startup company whose stock may soar even though y...e possibility of gaining versus losing when making risky decisions. Participants in the study, mostly UCLA students in their 20s, were given $30 and then as...

Genetic surprise confirms neglected 70-year-old evolutionary hypothesis

...ypothesis. "We knew going into this that it was a risky experiment," says Masly. "But we hoped we could pull it off."Over the span of the six-year project, the prospects of bolstering the controversial evolutionary idea looked increasingly bleak. Masly brought together two species of fruit fly--the workh...

Fast test for low blood flow in dogs detects early heart trouble

...hers say, it decreases the need for invasive, more risky procedures, such as angiograms or cardiac catheterization, to check for arterial blocks. More than 1 million Americans undergo cardiac catheterization each year, and the procedures take much longer to perform, 30 minutes to 45 minutes, and requir...

Queen bee promiscuity boosts hive health

Though promiscuity may be risky behavior for humans, it's healthy for honeybees: Queen honeybees who indulge in sexual surfeits with multiple drones produce more disease-resistant colonies than monogamous monarchs. According to a new Cornell study published in the Jan. 7 issue of ...

Male circumcision reduces HIV risk, study stopped early

...ontracting HIV and may be more likely to engage in risky behavior. The Kenya study suggests that circumcision did not increase risky behavior among circumcised or uncircumcised men, according to Bailey. "Both uncircumcised and ci...

Mars mission Risk 29: Scientists research ways to reduce radiation-induced brain damage

...ars, even without humans aboard, is a monumentally risky engineering feat. Since 1998, the United States has completed seven Mars missions. Four failed when the Mars landers were lost on arrival. As part of a new push to put a man on Mars, NASA has sketched out a roadmap laying out 45 risks to astronauts...

Age-related changes in DNA repair illuminate the connection between age and genetic damage

...ndings raise the question of whether the rapid but risky methods of DNA repair used by cells of young individuals contribute to the accumulation of genetic damage, and perhaps to the aging process itself. Older cells may use the safer repair methods, but they still carry the genetic damage incurred during ...

A transplant in time

... genetic diseases, when they exist, may consist of risky blood transfusions or expensive enzyme replacement therapy. But what if the body could be induced to begin producing these proteins, say by transplanting healthy tissue with the abilities that are lacking? Prof. Yair Reisner and Ph.D. student Anna A...

Brain's 'gambling circuitry' identified

...lar subject during a manic episode may invest in a risky business proposition either because they mispercei... able to distinguish the processes underlying such risky behavior, wrote the researchers. However, they wrote, "Since our task was designed to minimize the i...

New research: Soy germ isoflavones reduce bone loss

... maintain bone health after menopause ?without the risky side effects associated with long-term hormone replacement therapy use. This promising research is another step in advancing soy germ isoflavones as a safe, effective option," said Jocelyn Mathern, RD and Technical Specialist, Acatris. The study ai...

Meth promotes spread of virus in HIV-infected users

...ces inhibitions, thus increasing the likelihood of risky sexual behavior and the potential to introduce the virus into the body, and at the same time allows more virus to get into the cell," said Nair, professor of medicine and a specialist in immunology in the UB School of Medicine and Biomedical Sciences...

New HIV study identifies high-risk subgroups of adolescents

...al health problems. Prior studies have found that risky sexual behavior is often associated with mental he...ary by gender. “This study tells us that not all risky adolescents have the same risk behaviors and that the patterns seem to be different between boys and...

Suicide risk does not increase when adults start using antidepressants, study finds

...lthough not because these medicines are especially risky or dangerous," he says. "Patients need to be monitored to ensure they're getting the right medication in the amount that can help them feel better." ...

Teens unaware of sexually transmitted diseases until they catch one, Carnegie Mellon study finds

...now little about STDs are more likely to engage in risky sexual behavior and to delay the treatment of STDs. And the consequences are severe. Genital herpes, for example, cannot be cured. Genital warts can render a woman more susceptible to cervical cancer, and chlamydia can lead to infertility. A 2004 st...

Common practices at petting zoos put visitors at risk

...o visitors were also engaging in a number of other risky behaviors. The most common risky behavior observed by the South Carolina researchers was visitors bringing food or drink items into t...

Alcoholism, smoking and genetics among Plains American Indians

... may be less likely to participate in this kind of risky behavior and may be protected from alcoholism." Enoch and her colleagues also found that the Val allele was a risk factor for smoking, but only in women. For the current study, researchers recruited 342 (201 women, 141 men) community-based Plains A...

New malaria vaccine shows promise in early clinical trial

...laria and see if they are protected. However, this risky test is not ethical during the early stages of vaccine testing. But Druilhe and colleagues were nevertheless able to take their early trial a step further: They demonstrated that antibodies from the blood of vaccinated volunteers were able to inhi...

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