Weather
doesn't cause low back pain, say scientists
Washington: Aussie scientists have shunned the belief that
low back pain are linked to weather conditions such as temperature, humidity,
air pressure, wind direction and precipitation.
As per to the World Health
Organization (WHO), nearly everyone experiences low back pain at some point in
their life, making it the most prevalent musculoskeletal condition and
affecting up to 33 percent of the world population at any given time. Those
with musculoskeletal (bone, muscle, ligament, tendon, and nerve) pain report
that their symptoms are influenced by the weather. Previous studies have shown
that cold or humid weather, and changes in the weather increase symptoms in
patients with chronic pain conditions.
Dr. Daniel Steffens form the University of Sydney said that
patients believe that weather impacts their pain symptoms, but there were few
robust studies investigating weather and pain, specifically research that does
not rely on patient recall of the weather.
For the present case-crossover study, 993 patients seen at
primary care clinics in Sydney were recruited between October 2011 and November
2012. Weather data from the Australian Bureau of Meteorology were sourced for
the duration of the study period. Researchers compared the weather at the time
patients first noticed back pain (case window) with weather conditions one week
and one month before the onset of pain (control windows).
Results showed no association between back pain and
temperature, humidity, air pressure, wind direction or precipitation. However,
higher wind speed and wind gusts did slightly increase the chances of lower
back pain, but the amount of increase was not clinically important.
Dr. Steffens concluded that their findings refute previously
held beliefs that certain common weather conditions increase risk of lower back
pain.
The study is published in the
journal of the American College of Rheumatology, Arthritis Care and
Research.
Source: www.zeenews.india.com
12.07.2014
Caesarean
babies have weaker immunity
London: Children born through a
caesarean section procedure have different intestinal microbes than children
born normally, says a study.
Researchers studied the effects of
caesarean section births on the immune system of baby mice.
The study
shows that pups delivered by caesarean section had developed a lower number of
cells that strengthen the immune system, said Camilla Hansen from University of
Copenhagen in Denmark.
Newborns delivered by natural birth
are exposed to more bacteria from the mother than those delivered by caesarean
section.
According to a hypothesis called the
hygiene hypothesis, the newborn baby's immune system in this way learns to
distinguish between its own harmless molecules and foreign molecules.
Mice delivered by caesarean section
showed a lower number of cells that prevent immune cells from attacking
harmless cells.
Autoimmune diseases such as type 1
diabetes and allergy are caused by a similar over-reaction by the immune
system.
The
findings were published in the Journal of Immunology.
Source: www.zeenews.india.com
12.07.2014
Mistake increase your experience; And experience decreases
your mistakes
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