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Cell Biology

Stem Cell Breakthroughs: No More Ethical Concerns?
October 19, 2005
Several science news sites have been reporting two new techniques for creating embryonic stem cells that do not involve the creation of viable embryos (see, for instance, New Scientist, Science Now, and Nature news, 437, 1065 (20 October 2005) | doi: 10.1038/4371065a).     There is no consensus yet, however, whether these methods overcome all […]
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Early Man

Men Aren’t Going Extinct – Yet
September 3, 2005
Not long ago, evolutionary biologists were predicting the demise of manhood (see 11/01/2001, 03/31/2004).  The idea was that the Y chromosome, with no redundant copy (unlike the female’s two X chromosomes, and all others) appeared to be shriveling up and mutating itself out of existence.  Now that the chimpanzee genome has been published (see 09/01/2005 […]
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Health

Looking for Ethical Alternatives to Embryonic Stem Cells
August 24, 2005
Pro-life advocates perked up their ears at the announcement of a new method that can produce stem cells without destroying embryos.  National Geographic News and MSNBC News talked about the method, which uses skin cells and “reprograms” them to act like embryonic stem cells.  Religion Journal thinks the ethical debate over stem cells may be […]
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Health

Bone Has Built-In Shock Absorbers with Molecular Springs
July 19, 2005
Your bones have little molecular springs in them that unwind and keep the collagen fibrils “glued” together when stress threatens a fracture.  See the description, with electron micrographs and diagrams, in a press release from UC Santa Barbara.  Said co-author Daniel Morse, director of UCSB’s Institute for Collaborative Biotechnologies: “It’s especially exciting for us to […]
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Health

Are Natural Poisons Health Cures in Disguise?
June 15, 2005
Three recent stories are suggesting that natural toxins may be too much of a good thing: Snail Trail:  John Roach in National Geographic News wrote about new painkillers and drugs being developed from toxic snail venoms.  Cone snails create an array of hundreds of unique chemical compounds (see 10/22/2003 entry). Fungus Among Them:  A fungus […]
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Health

Health Beliefs Re-examined
May 30, 2005
Scientists continue to find new things that undermine commonly-held beliefs about health and the environment.  For example, Shower power:  Drinking more and showering less may not help conserve water, say Australian scientists reported by EurekAlert.  Sun bath:  We were always warned to keep out of the midday sun to avoid cancer, right?  Science Daily talks […]
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Health

Exercise May Reduce Colon Cancer Risk
May 18, 2005
Risk of incidence and recurrence of colon cancer appears to be reduced with exercise, according to a report by the American Society of Clinical Oncology reported in EurekAlert.  Data now supports what was once just a good idea. Make exercise a part of your routine.  Your body needs it in more ways than one.  This […]
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Botany

Weeds Hold Promise for Miracle Drugs
May 3, 2005
We’d like weeds if we knew them better, says John Roach for National Geographic News, especially if we realized they may contain wonder drugs.  “It’s often said that plants hidden in the tangle of the Amazonian rain forest may harbor an undiscovered cancer cure,” he writes; “John Richard Stepp thinks the same can be said […]
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Health

Active Adolescents Are Leaner, Fitter
April 7, 2005
The intuitively obvious sometimes holds up to experimentation.  Researchers at Medical College of Georgia found that, indeed, young people who are physically active are less likely to be obese.  Most adolescents need to double their physical activity, the researchers said, preferably an hour or more a day – and it needs to be vigorous.  In […]
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Health

Tissues Build Firebreaks to Avoid Disease
March 9, 2005
An article in the March 3 issue of Nature1 explains how tissues communicate to fight off infection.  As reported before, cells display samples of the proteins they contain on their outer membranes, a process called presentation.  Killer T cells wander around, like cops, looking at the presentations.  When they recognize alien proteins (antigens), they respond […]
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Health

Trail + Trail Mix = Health Mix
January 26, 2005
Peanuts, a staple ingredient in trail mix, are “rich in good chemicals,” reports the BBC News.  They have as many antioxidants as fruits, are high in protein and “good” monounsaturated fat.  So take some along and go on the trail, because, according to Southwestern Medical Center, “Exercise helps reduce symptoms of depression,” and EurekAlert reminds […]
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Health

A Proverb a Day Keeps the Doctor Away
January 18, 2005
Short, pithy statements of wisdom can keep you on the right health track, according to a press release from University of Toronto.  Bernard Choi offers some examples, like “seven days without exercise makes one weak.” King Solomon had some pretty good ones: A joyful heart is good medicine (17:22) A wise man is strong (24:5) […]
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Health

Remember to Exercise, and You’ll Remember More
January 18, 2005
Old dogs can remember old tricks and learn new ones, say researchers from the National Institutes of Health.  According to an article on EurekAlert, the secret is a program of diet, exercise and stimulating environments.     Scientists got snoopy about old beagles, and found their brains could remain in tip-top shape with lifestyle adjustments.  […]
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Health

For Better Workouts, Head for the Hills
December 14, 2004
Science News1 reported on a study by the American Heart Association that shows hiking in the mountains is good for you.  Experiments on people hiking in the Austrian Alps showed that going uphill, the body improves the processing of fats called triglycerides, and walking downhill improves the processing of glucose sugar.  45 volunteers who were […]
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Health

Adult Stem Cells Continue to Work Miracle Cures
October 27, 2004
Chalk up two more amazing successes for adult stem cells (not derived from human embryos, like the controversial ES stem cells): 1. Blindness:  The BBC News reported that stem cells from the back of the eyeball might be able to restore sight to those afflicted with macular degeneration, a leading cause of blindness. 2. Parkinson’s […]
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