BODY MASS INDEX

  Obesity is defined as an excess of body fat which increases the risk of type 2 diabetes, heart disease and stroke.  Using a person’s height and weight is considered the standard for gauging it.  But this index doesn’t account for differences in body-fat composition, gender, race, fitness, or age.  Recent research underscores its limitations.  In a 2010 meta-analysis involving nearly, 32,000 people, published in the International Journal of Obesity, the BMI for obesity (30 and above) failed to identify half of the people with excess body fat.  The index doesn’t also reflect where you carry fat, which is an important factor because people with a lot of fat around the waist are at higher risk for obesity-related diseases.  Experts now suggest that combining your BMI with your waist circumference is a better indicator of fitness.  A waist measurement greater than 40 inches for men and 35 inches for women indicates an increased risk for obesity related conditions.  (To determine your BMI multiply your weight in pounds by 703, then divide by height, in inches squared.    Or use the online calculator at: www.ConsumerReportsHealth.org/bmi.)     

STRETCHING BEFORE AND AFTER EXERCISE

 Countering a tradition among exercisers, a study presented at a meeting of the American Academy of Orthopaedic Surgeons in 2011 found that stretching before running didn’t prevent injuries.  Researchers assigned 2,729 runners to either a group that didn’t stretch or a group that stretched their calves and thigh muscles.  Both groups had the same injury rate, but the risk of getting hurt was higher for runners who were heavier or older, ran more miles, had an injury in the past four months, or switched from their normal pre-run routine – especially those who usually stretched and were asked not to.  Two systematic reviews also concluded that stretching before or after exercising didn’t reduce muscle soreness or injury.  Instead, do a 5 minute warm-up at a fairly easy intensity to increase range of motion and make exercise easier.

ABOUT ANNUAL DENTAL X-RAYS - If your teeth are X-rayed as soon as you settle into the dental chair, that is not in step with current American Dental Association guidelines.  To minimize radiation exposure, the ADA advises dentists to examine patients first and then order X-rays and where they are needed.  Bitewing X-rays, directed at specific teeth, for example, are only necessary every 2 to 3 years provided you don’t have gum disease.

Or request a lead apron and thyroid collar if the dentist uses E or F speed.