Tag: "menopause" at biology news

Researchers find gene mutation that causes infertility in male mice

... run out of eggs prematurely -- resulting in early menopause (or "mousapause" as the researchers humorously refer to the condition). To get their results, the researchers randomly induced mutations in the mouse genome and then looked for infertility in the resulting mice. They then analyzed the DNA of the st...

Down syndrome: It's not just the age factor

...dvantaged embryos. However, as women approach the menopause and the risk of future infertility increases, this selection, or filtering stringency, is expected to relax. Neuhäuser and Krackow's paper provides evidence that older mothers, who give birth to children with Down Syndrome, have a relaxed stringen...

Male chimpanzees prefer mating with old females

...tnerships, and that female fertility is limited by menopause and, therefore, age. The converse of such an expla...ies that appear to lack long-term pair bonding and menopause (such as chimpanzees) should not exhibit such strong preferences by males for young females. In t...

New research: Soy germ isoflavones reduce bone loss

...tives for women to help 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, Aca...

Fish evolve a longer lifespan by evolving a longer reproductive period, researchers find

...his result could be of interest to those who study menopause in humans and who have argued that post-reproducti...ow it would be possible to evaluate whether or not menopause in humans has been shaped by natural selection. Appropriate comparisons, such as those between human...

Getting an evolutionary handle on life after reproduction

...inated by investigations into the origins of human menopause and extended lifespan, the authors make a strong case for using experimental comparative analyses of other species to gain an evolutionary perspective on the human condition. ...

Menopause Symptoms May Come Back After Stopping Menopausal Hormone Therapy

...or the treatment of problems with menstruation and menopause and other conditions that affect women," said Warren. "It is unfortunate that their quality and safety are not better controlled. Such an environment has set up a situation where there are potentially many accidents waiting to happen." However, he s...

Women cautioned against using herbal supplements

...or the treatment of problems with menstruation and menopause and other conditions that affect women," said Warren. "It is unfortunate that their quality and safety are not better controlled. Such an environment has set up a situation where there are potentially many accidents waiting to happen." However, he s...

Stem cells in bone marrow replenish mouse ovaries

... of ovaries could postpone the hormonal effects of menopause and could represent an alternative to hormone replacement therapy. Finally, the researchers would like to find out whether these stem cells could be coaxed to produce eggs in the laboratory, potentially providing a new source of eggs for therapeutic ...

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