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Barack Obama is a master at grabbing and keeping his audience's attention, which is the number one goal of any public speaker. How does he do it? Here are five key lessons from Obama's rhetorical playbook.

Jo-Ann Stores is posting impressive sales and earnings numbers and is an example of a retail sector on which Walmart doesn't have a steel grip.

Hang onto this essential checklist, so you’ll know what to do when the time comes.

Insidermedicine Daily News (Video)
Insidermedicine is a physician-led news organization that allows you to keep on top of the latest evidence-based medical information by watching our unique videos that are created each weekday by our team of medical experts. Our goal is to reach patients, students, doctors,and other healthcare professionals around the world to ensure that each is receiving a daily health and medical update. Our content is streamed in H.264 encoded video (suitable for iPod playback) and MP3 audio-only format. (This is the video version.) Visit us on the web at http://www.insidermedicine.com, and look for our Podcasts in the iTunes Music Store!

• INSIDERMEDICINE VIDEO: Environmental Factors in Skin Aging, Operating Room Strategies, Virus Fighting Proteins Identified
  

  (December 21, 2009 - Insidermedicine)
  
  From Cleveland - It is estimated that up 40% of skin aging is related to environmental factors. According to an analysis of 65 twin pairs, smoking, being overweight and not using sunscreen raise the risk of premature skin aging. The research, published in the Archives of Dermatology, also suggests that drinking alcohol may prevent premature skin aging.

  From Providence - According to research published in the Archives of Surgery, surgeons who run their ORs like a aviation cockpit may make surgical error less likely. Based on lessons learned from the aviation industry, surgical teams from Brown University implemented a series of checklists to improve communication and reduce errors. The process has resulted in 100% compliance and an improved feeling of self-empowerment among staff.

  And finally, from Boston - A new family of proteins has been identified that may lower the risk of getting the flu and may one day help in treating other viral infections. A research team from Harvard, studying human and mouse cells, identified the flu-fighting proteins that slowed most virus particles, including the H1N1 virus from infecting cells at the earliest stage in the virus lifecycle.

• INSIDERMEDICINE VIDEO: Alcohol Outlets Play Role in Alcohol Problems of Young Adults, Smoking Mutates DNA, New Blood Clotting Agent to Help Wounded Soldiers
  

  (December 18, 2009 - Insidermedicine)

  From California - According to a report published in the journal Alcoholism: Clinical & Experimental Research, underage and young adults may have more alcohol related problems depending on the amount and type of alcohol outlets that surround them. Researchers examined hospital discharge information, as well as demographic data regarding alcohol outlets, focusing on youth aged 18-20 and 21-29. They found that greater numbers of restaurants were associated with more traffic accidents and greater numbers of bars were associated with more assault injuries.

  
  From the UK - Scientists have found that smoking can mutate a person's DNA, according to a report published in the journal Nature. A large international study identified almost 23,000 genetic mutations in lung cancer cells. As a result, researchers estimate that people attain one genetic mutation for every 15 cigarettes smoked--emphasizing that every time these mutations occur, they have a chance to 'hit' a cancer gene.

  
  And finally, from Cleveland - According to a report published in the journal Science Translational Medicine, scientists have developed a new blood clotting agent that may help soldiers wounded in combat. Researchers developed synthetic platelets that, once injected into the patient, combine with natural platelets to form a blood clot and stop the bleeding.  When injected in rats 20 seconds following an injury, bleeding time was reduced by 25%.

• INSIDERMEDICINE VIDEO: In Hospital Kidney Injury Increases Risk of Mortality, Cutting TV Time Burns Calories in Overweight People, Natural Antiviral Protein Discovered
  

  (December 17, 2009 - Insidermedicine)

  From Massachusetts - Suffering an acute kidney injury (AKI) in-hospital increases a patient's risk of mortality once released, according to a report published in the Journal of the American Society of Nephrology. Researchers studied over 83,000 patients who suffered sudden loss of their kidney function in-hospital, but did not undergo dialysis and survived a minimum of three months after their release from the hospital. Results showed that 30% of patients who suffered AKI died after two years, compared with only 16% of patients who did not suffer this injury.

  From California - According to a repot published in the Archives of Internal Medicine, watching less television burns calories in overweight adults. Researchers studied 36 overweight adults, having one group of participants cut their TV time in half while the other watched their normal amount. Results showed that the group of patients who watched less TV burned an extra 120 calories per day.

  
  And finally, back to Massachusetts - Researchers have identified naturally occurring proteins that help prevent viral infections, according to a report published in the journal Cell. Researchers found antiviral proteins in human and mouse cells, discovering that the proteins were able to either prevent or at least slow viruses--such as the seasonal flu, H1N1 influenza, West Nile virus, and the dengue virus--as soon as the infection started its course.

• INSIDERMEDICINE VIDEO: Less Education Linked to More Asthma Problems, FDA Recommends Preventive Use of Rosuvastatin, Nearsightedness On the Rise
  

  (December 16, 2009 - Insidermedicine)

  From Montreal – According to a report published in the journal Respiratory Research, researchers may have found a connection between education level and problems with asthma.  Researchers studied over 800 adult patients, finding that those with less than 12 years of formal schooling were more likely to have worse control over their asthma symptoms as well as a 55% increased risk of going to the emergency department with an asthma related incident.

  
  From Washington – The FDA is now recommending that rosuvastatin can be used for preventive purposes, even in patients with no history of atherosclerosis. Researchers studied over 17,000 adult men and women who had no prior history of heart disease but had elevated c-reactive protein levels, administering rosuvastatin for nearly 2 years. Results showed a relative decrease of 44% in the amount of heart attack, stroke, and cardiovascular death.

  
  And finally, from Bethesda – According to a report published in the Archives of Ophthalmology, the amount of people with nearsightedness has increased significantly in the past 30 years. Researchers examined information from the National Health and Nutrition Examination survey (NHANES), comparing the prevalence of nearsightedness (or, myopia) from 1971-1972 with 1999-2004. They found that the overall incidence of myopia increased from 25% in the earlier period to 41.6% in the later period.

• INSIDERMEDICINE VIDEO: Low Leptin Levels Linked to Alzheimer's Disease, Cystic Fibrosis Decreases with More Screening, Insomnia Connected to Childhood Medical Presentation
  

  (December 15, 2009 - Insidermedicine)

  From Boston - According to a report published in the Journal of the American Medical Association, high leptin levels may be associated with a lower risk of Alzheimer's disease.  Researchers measured leptin levels of over 700 healthy patients at the beginning of the study, 198 of whom underwent brain MRIs 7 years later. Results showed that those with the lowest leptin levels had an absolute risk of 25% for Alzheimer's, while those with the highest levels had a risk of only 6%.
  
  From Italy - According to another report published in the Journal of the American Medical Association, researchers have noted an association between increased cystic fibrosis carrier screening and decreased newborns who have the condition. Researchers studied two Italian regions for 14 years; one had a limited CF screening program of only relatives of CF patients and couples undergoing in vitro fertilization, while the other was more comprehensive and screened infertile couples as well as couples who were of reproductive age. Results showed that the comprehensive screening region had a much more significant decrease in neonates born with CF than the region with limited screening.
  
  And finally, from Pennsylvania - Young children presenting with headaches and gastrointestinal regurgitation frequ