The Telangana Science Journal
Babies and Exercise
Men whose diets contain a lot of processed
meats may be raising their risk for adult-onset (type 2) diabetes according
to a study published in the American Diabetes Association journal Diabetes
Care, which suggests an increased diabetes risk in men who eat processed
meat more than four times per week.The more the men ate foods such as hot
dogs, bacon and packaged lunchmeats, the higher their diabetes risk climbed.
They note that the high-fat condiments and side dishes often eaten with
processed meats may also affect diabetes risk.
Meat Sale, a Bloody Enterprise
killing of gorillas, chimpanzees and other primates for food is threatening
AIDS research and may cause diseases to spread, scientists said. "There
is no doubt humans are exposed" to different infections through the spilled
blood of chimpanzees and other animals killed in west and central Africa,
said Dr. Beatrice H. Hahn of the University of Alabama at Birmingham at
a briefing on Capitol Hill. Hahn said illegal commercial trading
of "bushmeat" - sold around the world - could have a severe effect on human
health if it isn't stopped.
an estimated 25% of American children are obese, and the prevention of
childhood obesity has become a vital public health priority because obese
children are much more likely to become obese adults. Although factors
such as the sex, ethnicity or socioeconomic status of the child have been
thought to affect a child's weight, a new study in the American Journal
of Clinical Nutrition finds that a mother's child-feeding practices outweigh
all other influences on her child's total fat mass. The authors conclude
that highly controlling feeding strategies may interfere with children's
ability to self-regulate their food intake.
a World Wide Problem Now
problems have long been recognized as a health hazard in the United States,
Europe and other industrialized places, but in recent years the same worries
have begun to emerge in many less well-off places. Obesity increases the
risk of a variety of health woes, especially diabetes, which is rising
rapidly in many parts of the world. Some of the most extreme weight gains
are seen among people who move from poor countries to places like the United
States, where clean water prevents many childhood diseases and high-fat
food is plentiful. At the annual meeting of the American Association for
the Advancement of Science in February, biological anthropologists documented
this trend, both in people who migrate to wealthy countries and in those
who stay put. Obesity has begun to appear in the Purari delta of rural
Papua New Guinea, where there was none at all in 1980. In the latest survey,
conducted five years ago, 1 percent of men and 5 percent of women were
found to be obese. This is defined as a body-mass index (BMI). People with
a BMI of over 25 are considered overweight, while those with a BMI over
30 are obese. In parts of the Pacific islands, obesity has been known for
at least 50 years, but it has substantially increased in recent times to
levels and there is no hint that weights there have leveled off.
In Rarotonga, capital of the Cook Islands, 14 percent of men and 44 percent
of women were obese in 1966. Now, 52 percent of men and 57 percent of women
there are obese. In Cape Town, 12 percent of girls and 16 percent
of boys were considered overweight. In much poorer rural Klein Karoo 300
kilometers to the west, just 1 percent of boys and 2 percent of girls weighed
this much. In a similar survey among nomadic people in the central desert
of Australia, about 4 percent of children and 15 percent of adults are
obese. In of Guatemalan Mayan children in Los Angeles and rural central
Florida nearly half are overweight and 42 percent are obese. The obesity
is blamed on the growing worldwide availability of high-calorie foods and
less physically demanding jobs.
A study published in the Journal of the
American Medical Association finds that Viagra did not worsen heart function
in men with stable coronary disease. The researchers had the men perform
an exercise test, which was supposed to simulate the physical rigors of
sex. The men bicycled for an average of 7.4 minutes. Most of them developed
ischemia (reduced blood flow) during both tests, but the Viagra did not
increase the risk or worsen the condition. The study funded by grants from
the Mayo Foundation and the American Heart Association comes following
concern over whether Viagra, which increases blood flow into the penis,
might be harmful for men with heart conditions.
National Association for Sport and Physical Activity, a nonprofit group
known for exercise guidelines for older children and adults, aimed its
latest recommendation at helping parents, day care centers and preschools
help tots develop motor skills:
of an infant's day should be spent in structured activity with a parent
or caregiver - playing peekaboo or patty-cake, being carried to and exploring
not keep infants or toddlers in baby seats or other restrictive settings
for long periods. Even young infants move differently when placed on a
blanket on the floor than when in a baby seat.
should accumulate at least 30 minutes of structured physical activity,
and preschoolers at least an hour, each day. Play follow-along songs, chase
or ball; for older children, balancing games or tumbling increase strength
and body control.
and preschoolers should spend at least an hour, preferably more, a day
in free play - exploring, experimenting, imitating. Caregivers should provide
safe objects to ride, push, pull, balance on and climb.
and preschoolers should not be sedentary for more than an hour at a time
except when sleeping.
activity should not be forced or used as punishment, the guidelines say.
Instead, it should be a routine part of daily life and parents should join
in, not just sit on a park bench and watch the children romp.
Sreenivasarao Vepachedu, February 2002
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