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Science News for June 15, 2008


Low testosterone may cause health problems that lead to erectile dysfunction

A new study by The Endocrine Society reveals that low testosterone may cause health problems leading to erectile dysfunction, metabolic syndrome, and cardiovascular disease. Researchers found that 18.3% of men with erectile dysfunction had undetected testosterone deficiency.

SourceThe Endocrine Society·JournalThe Journal of Clinical Endocrinology & Metabolism·DateJun 15, 2008

Overweight does not decrease sperm production

A new study by The Endocrine Society found that overweight men are not more likely to be infertile, contradicting previous research on obese women. Greater body weight was linked to lower testosterone levels in some participants, but impaired sperm production remains the primary cause of infertility in men.

SourceThe Endocrine Society·JournalThe Journal of Clinical Endocrinology & Metabolism·DateJun 15, 2008

Stem cell researchers give old muscle new pep

Researchers identified two key pathways controlling adult stem cells' repair and replacement abilities. By tweaking these pathways, they revived the ability of old mice's muscle tissue to repair itself nearly as well as younger counterparts.

SourceUniversity of California - Berkeley·JournalNature·DateJun 15, 2008

Study is key for approval of first drug for female sexual dysfunction

A new multicenter study is being conducted to assess the safety of testosterone gel (LibiGel) for postmenopausal women with low sexual desire. The study aims to enroll 2,400 to 3,100 women aged 50-80 with hypoactive sexual desire disorder and follow them for at least a year.

SourceThe Endocrine Society·JournalThe Journal of Clinical Endocrinology & Metabolism·DateJun 15, 2008
Apple iPhone 17 Pro

Apple iPhone 17 Pro delivers top performance and advanced cameras for field documentation, data collection, and secure research communications.

UQ research finds aging is satisfying

Researchers found that older adults are just as socially satisfied as younger counterparts, contrary to conventional wisdom. The study suggests that older adults' perception of their experiences brings them more satisfaction, enabling them to find uplift in everyday life.

SourceResearch Australia·JournalPsychology and Aging·DateJun 15, 2008

Current screening test for prediabetes in children misses the diagnosis too often

A new Canadian study found that the standard screening test for high blood sugar in children with risk factors misses nearly 3 times fewer cases of prediabetes than a longer test. The glucose stress test identified more cases of both prediabetes and metabolic syndrome. Early detection is crucial, as it can prevent or delay diabetes.

SourceThe Endocrine Society·JournalThe Journal of Clinical Endocrinology & Metabolism·DateJun 15, 2008
SAMSUNG T9 Portable SSD 2TB

SAMSUNG T9 Portable SSD 2TB transfers large imagery and model outputs quickly between field laptops, lab workstations, and secure archives.

Hunger hormone increases during stress, may have antidepressant effect

Research at UT Southwestern Medical Center suggests that ghrelin levels rise with chronic stress, decreasing symptoms of depression and anxiety, but also increasing food intake and body weight. The findings provide new insights into the complex relationship between hunger hormones and mood regulation.

SourceUT Southwestern Medical Center·JournalNature Neuroscience·DateJun 15, 2008

Estrogen therapy helps or hurts the brain depending on reproductive status

A new animal study suggests that estrogen treatment is not toxic per se, but its effects on the brain depend on an individual's reproductive age. In rats, estrogen therapy reduced brain damage when given before menopause, but increased it after, highlighting a narrow window of time for neuroprotective benefits.

SourceThe Endocrine Society·JournalThe Journal of Clinical Endocrinology & Metabolism·DateJun 15, 2008

Ebb and flow of the sea drives world's big extinction events

A new study suggests that changes in ocean environments related to sea level exert a driving influence on rates of extinction, leading to the loss of up to 75-95% of species. The research links mass extinctions over time, establishing a common link and providing insight into who survives and who doesn't across these boundaries.

SourceUniversity of Wisconsin-Madison·JournalNature·DateJun 15, 2008
Meta Quest 3 512GB

Meta Quest 3 512GB enables immersive mission planning, terrain rehearsal, and interactive STEM demos with high-resolution mixed-reality experiences.

Some patients may not need insulin for long-term control of type 2 diabetes

A new study found that some patients with type 2 diabetes can maintain good blood sugar control for years using non-insulin oral diabetic medications. The study of 191 veterans showed that 55% of patients remained on oral drugs and achieved improved hemoglobin A1c levels.

SourceThe Endocrine Society·JournalThe Journal of Clinical Endocrinology & Metabolism·DateJun 15, 2008