Mammograms Don’t Lead To Fewer Deaths, Suggests A New Study

By Reuters Staff
(Reuters Health) – Breast cancer screenings may not lead to fewer deaths, suggests a new study of U.S. data.

In areas of the U.S. with high levels of screening, more tumors were diagnosed – but breast cancer death rates were no lower than in areas with fewer screenings, researchers report.

Each year, about 230,000 U.S. woman are newly diagnosed with breast cancer, according to the National Cancer Institute.

While screening guidelines very, the government-backed U.S. Preventive Services Task Force says average-risk women should have mammograms every other year between ages 50 and 74. Getting screened before age 50 should be an individual decision, according to the Task Force.

For the new study, Richard Wilson and colleagues from Harvard University in Cambridge, Massachusetts analyzed breast cancer screenings, cancer diagnoses, tumor characteristics and deaths in 547 U.S. counties.

The data came from nearly 16 million women living in those counties in 2000. All were at least 40 years old. The percentage who had screening mammograms ranged from 39 percent to 78 percent, depending on where they lived.
Overall, more than 53,000 of the women were diagnosed with breast cancer in 2000.

The researchers report in JAMA Internal Medicine that the number of breast cancer diagnoses rose with the number of screenings, but the amount of breast cancer deaths over the next 10 years remained the same.

Overall, a 10 percentage point increase in breast cancer screenings was tied to a 16 percent increase in breast cancer diagnoses.

The number of screening mammograms performed did not affect the number of breast cancer deaths, however.

Most of the additional cancers detected on screening were small tumors. There wasn’t an increased in diagnosis of large – and presumably more advanced – tumors.

The findings suggest breast cancer screenings lead to overdiagnosis because —> Read More

The Dawn Chorus–Nature’s Best Symphony

As I come over the hill, I hear the wood thrush singing his evening lay. This is the only bird whose note affects me like music, affects the flow and tenor of my thoughts, my fancy and imagination. It lifts and exhilarates me…. It is a medicative draught to my soul. It is an elixir to my eyes and a fountain of youth to all my senses….“–Henry David Thoreau, Journal 22, June 1853

The time is 4:24 am. I sit upright in bed, awakened by an inspirational choir that has just burst into sound. Vacationing in the woods of northern Vermont, I’ve taken a summer sojourn back to the temperate forests of my childhood. I was entitled to sleep until noon as the obvious privilege of vacation. But late sleepers in the short New England summer miss one of the best musical events of the year. The red-breasted robin is the first songster on nature’s program. Greeting the pre-dawn with a melodious, cheerful message, it reminds all of the forest denizens that sunrise is imminent. The robin’s instinctive time-clock is accurate within seconds: Slivers of pink and red soon slice across the dark sky, interspersed with fingers of mist rising from last evening’s thundershower. Soon, that dawn harbinger is joined by a couple of other robins, a trio in full song. As if not to be outdone, the white-throated sparrows join in. Their lyrical solos echo, “Oh sweet Canada, Canada”. One of my favorite voices of nature, this poignant song instead says to me, “Oh, back home-again, home-again.” It is comforting that, almost two centuries after Thoreau described New England songbirds, their melodies have remained remarkably true over time.

Within ten minutes of the robin’s wake-up lyrics, the entire hillside chorus is in full sound–red-eyed vireo, house wren, bluebird, goldfinch, —> Read More

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