ScienceDaily: Health & Medicine News

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• Contraceptive pill associated with increased prostate cancer risk worldwide, study finds
• High childhood IQ linked to subsequent illicit drug use, research suggests
• Even the cleanest wastewater contributes to more 'super bacteria'
• Enzyme boosts metabolism, prevents weight gain in mice
• Routine head hits in school sports may cause brain injury
• Potential new drug target in Lou Gehrig's disease
• Hysterectomy increases risk for earlier menopause among younger women, study finds
• Stem cell study helps clarify the best time for therapy to aid heart attack survivors
• AMD-like lesions delayed in mice fed lower glycemic index diet
• Nature and nurture work together to shape the brain
• Risk of contracting diabetes to increase in world of 7 billion people
• Story of lymphatic system expands to include chapter on valve formation
• Novel nanocrystals with advanced optical properties developed for use as luminescent biomarkers
• Every mouse is different: How mouse 'personality' sheds light on human depression
• Self-organized pituitary-like tissue from mouse ES cells

Contraceptive pill associated with increased prostate cancer risk worldwide, study finds Posted: 14 Nov 2011 07:10 PM PST Use of the contraceptive pill is associated with an increased risk of prostate cancer around the globe, new research finds.

High childhood IQ linked to subsequent illicit drug use, research suggests Posted: 14 Nov 2011 07:10 PM PST A high childhood IQ may be linked to subsequent illegal drug use, particularly among women, new research suggests.

Even the cleanest wastewater contributes to more 'super bacteria' Posted: 14 Nov 2011 12:25 PM PST A new study reveals that the release of treated municipal wastewater -- even wastewater treated by the highest-quality treatment technology -- can have a significant effect on the quantities of antibiotic-resistant bacteria, often referred to as "superbacteria," in surface waters.

Enzyme boosts metabolism, prevents weight gain in mice Posted: 14 Nov 2011 10:37 AM PST Male and female mice engineered to express the inflammatory enzyme IKKbeta in their fat tissue ate more but gained less weight. They burned sugar and fat more effectively than mice who were left unaltered. The research may shed light on how obesity and inflammation affect insulin resistance and sensitivity.

Routine head hits in school sports may cause brain injury Posted: 14 Nov 2011 10:37 AM PST The brain scans of high school football and hockey players showed subtle injury -- even if they did not suffer a concussion -- after taking routine hits to the head during the normal course of play, according to a new study.

Potential new drug target in Lou Gehrig's disease Posted: 14 Nov 2011 10:36 AM PST Two proteins conspire to promote Lou Gehrig's disease, according to a new study.

Hysterectomy increases risk for earlier menopause among younger women, study finds Posted: 14 Nov 2011 08:23 AM PST In a finding that confirms what many obstetricians and gynecologists suspected, researchers report that younger women who undergo hysterectomies face a nearly two-fold increased risk for developing menopause early.

Stem cell study helps clarify the best time for therapy to aid heart attack survivors Posted: 14 Nov 2011 08:22 AM PST Physicians have found that stem cells obtained from bone marrow delivered two to three weeks after a person has a heart attack did not improve heart function. This is the first study to systematically examine the timing and method of stem cell delivery and provides vital information for the field of cell therapy.

AMD-like lesions delayed in mice fed lower glycemic index diet Posted: 14 Nov 2011 08:22 AM PST Feeding older mice a lower glycemic index diet delays the onset of age-related, sight-threatening retinal lesions. Mice put on a higher GI diet demonstrated elevated accumulations of debris known as advanced glycation end products in the whole retina, particularly in the cells of the retinal pigment epithelium (RPE). The RPE plays a crucial role in maintaining vision and its dysfunction results in the gradual vision loss that is the hallmark of age-related macular degeneration.

Nature and nurture work together to shape the brain Posted: 14 Nov 2011 08:20 AM PST Scientists presented new research today demonstrating the impact life experiences can have on genes and behavior. The studies examine how such environmental information can be transmitted from one generation to the next -- a phenomenon known as epigenetics. This new knowledge could ultimately improve understanding of brain plasticity, the cognitive benefits of motherhood, and how a parent's exposure to drugs, alcohol, and stress can alter brain development and behavior in their offspring.

Risk of contracting diabetes to increase in world of 7 billion people Posted: 14 Nov 2011 08:18 AM PST World citizen number seven billion is less likely to die from infectious diseases like measles or even AIDS, and more likely to contract diabetes or other non-communicable diseases, as they are now the leading causes of deaths globally.

Story of lymphatic system expands to include chapter on valve formation Posted: 14 Nov 2011 08:17 AM PST Scientists have shown that a gene essential for normal development of the lymphatic system also plays a critical role in forming the valves that help maintain the body's normal fluid balance.

Novel nanocrystals with advanced optical properties developed for use as luminescent biomarkers Posted: 14 Nov 2011 06:34 AM PST Researchers have developed a synthesis that yields lanthanide-doped nanocrystals with advanced light-control properties, leading to potential applications in cancer diagnostics, medical imaging and therapeutic delivery.

Every mouse is different: How mouse 'personality' sheds light on human depression Posted: 14 Nov 2011 06:34 AM PST Just as in humans, there are also the tough types or those with a more delicate personality among mice, researchers confirm. Some adopt an active strategy when faced with stressful situations and somehow try to tackle the problem, whereas others display a passive attitude. Those in the second group are more vulnerable: some of the physiological characteristics resemble those attributed to human depression.

Self-organized pituitary-like tissue from mouse ES cells Posted: 14 Nov 2011 06:34 AM PST The possibility that functional, three-dimensional tissues and organs may be derived from pluripotent cells, such as embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs), represents one of the grand challenges of stem cell research, but is also one of the fundamental goals of the emerging field of regenerative medicine. New research has shown that when ES cells are cultured under the appropriate conditions, they can be driven to self-organize into complex, three-dimensional tissue-like structures that closely resemble their physiological counterparts, a remarkable advance for the field.

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