Exercise’s Benefits for Seniors & Other News of Note
Posted on Friday, October 1st, 2010
Lifelong Exercising Yields Sensational Results (ScienceDaily)
Senior active skiers have twice the oxygen-uptake capacity of seniors who do not exercise. This is shown in new research at Mid Sweden University.
“The findings show that humans have a great potential to maintain a high level of physical work capacity and thereby better quality of life even at advanced ages,” says Per Tesch, professor of sports science.
* * *
They show that the maximum capacity for oxygen uptake is twice as great among active senior men compared with men who do not exercise. The results for the active seniors are comparable to values for men who are 40-50 years younger but do not exercise to improve their stamina. Analyses of muscle samples at the molecular and cell level reveal a profile similar to what is found in younger men…More…
Stop Making Unproven Health Claims, FDA Tells Mouthwash Makers (Medical News Today)
Three mouthwash makers – Johnson & Johnson, CVS Corporation and Walgreen Company – that say their products promote healthy gums and remove plaque above the gum have been told to stop making these claims by the FDA (Food and Drug Administration). In a warning letter, the FDA accuses them of making claims about their products without proof; the claims being that they are effective in preventing gum disease…More…
A new approach to anchor teeth back in the jaw using stem cells has been developed and successfully tested in the laboratory for the first time by researchers at the University of Illinois at Chicago.
* * *
Researchers in UIC’s Brodie Laboratory for Craniofacial Genetics used stem cells obtained from the periodontal ligament of molars extracted from mice, expanded them in an incubator, and then seeded them on barren rat molars. The stem cell-treated molars were reinserted into the tooth sockets of rats.
After two and four months, the stem cells aligned and formed new fibrous attachments between the tooth and bone, firmly attaching the replanted tooth into the animal’s mouth, said Smit Dangaria, a bioengineering doctoral candidate who conducted the research. Tissue sections showed that the replanted tooth was surrounded by newly formed, functional periodontal ligament fibers and new cementum, the essential ingredients of a healthy tooth attachment… More…
Taste Genes Predict Tooth Decay (ScienceDaily)
Dental caries is a highly prevalent disease that is disproportionately distributed in the population. Caries occurrence and progression is known to be influenced by a complex interplay of both environmental and genetic factors, with numerous contributing factors having been identified including bacterial flora, dietary habits, fluoride exposure, oral hygiene, salivary flow, salivary composition, and tooth structure. Previous reports have characterized the influence of the genetic variation on taste preferences and dietary habits.
In an article published in the Journal of Dental Research titled “Taste Genes Associated with Dental Caries” lead researcher Steven Wendell and researchers Melissa Brown, Margaret Cooper, Rebecca DeSensi, Mary Marazita, Xiaojing Wang and Robert Weyant, all from the University of Pittsburgh; and Richard Crout and Daniel McNeil from West Virginia University, hypothesized that genetic variation in taste pathway genes (TAS2R38, TAS1R2, GNAT3) may be associated with dental caries risk and/or protection…More…
The prevalence of periodontal disease in the United States may be significantly higher than originally estimated. Research published in the Journal of Dental Research from the Centers for Disease Control and Prevention (CDC) and the American Academy of Periodontology (AAP) suggests that the prevalence of periodontal disease may have been underestimated by as much as 50 percent. The implication is that more American adults may suffer from moderate to severe gum disease than previously thought…More…
Massage Benefits Are More Than Skin Deep (NY Times)
To their surprise, the researchers, sponsored by the National Center for Complementary and Alternative Medicine, a division of the National Institutes of Health, found that a single session of massage caused biological changes.
Volunteers who received Swedish massage experienced significant decreases in levels of the stress hormone cortisol in blood and saliva, and in arginine vasopressin, a hormone that can lead to increases in cortisol. They also had increases in the number of lymphocytes, white blood cells that are part of the immune system.
Volunteers who had the light massage experienced greater increases in oxytocin, a hormone associated with contentment, than the Swedish massage group, and bigger decreases in adrenal corticotropin hormone, which stimulates the adrenal glands to release cortisol…More…