In something of a reversal, the U.S. Preventive Services Task Force
recommended that the average woman wait until age 50, instead of 40, to begin routine
screening for breast cancer, and only get screened every two years.
Around the world, scientists are finding trace amounts of substances—from sugar and spice to heroine, rocket fuel, and birth control—in our drinking water.
Most U.S. teenagers are not as active as they should be, but a lack of exercise does not seem to account for rising rates of teen obesity, a new study finds.
Adults today have all been educated on the dangers of smoking, yet so many people still choose to light up. New reports show that the prevalence of adult smokers is no longer dropping yearly. Are we losing the battle?