
The sauna’s claim
to fame has been its ability to rid the body of impurities through sweat. A
body’s organs supposedly become blocked, causing them fill with toxins. When a person sweats excessively in a sauna or steam room, he or she supposedly is able to get rid of these toxins.
Dr. Rachel
Vreeman of Indiana University’s school of Medicine debunks this detoxification
myth in her book, Don't Swallow Your Gum! Myths,
Half-Truths and Outright Lies About Your Body and Health.
"The
term 'detoxify' is used so often that it makes people think that special steps
need to be taken so 'detoxifying' happens. Your body, however, does not need
special cleansing efforts,” Vreeman told Health Day.
Too much heat
exposure can lead to a slew of health problems including fatigue, nausea and stroke, not to mention extreme dehydration and an inability for the body
to cool itself—the real purpose for sweating. Some might
misread these symptoms for detoxification.
"Vomiting,
thirst, dizziness, being uncoordinated or clumsy are all signs of heat
exhaustion or heat stroke,” Vreeman told Health Day. “Heat illness can kill you
and should be treated as an emergency."
While there may
be other benefits to spending time in the sauna, Vreeman says detoxification
just isn’t one of them. “What it does need,” she says, “is
for you to get enough fluids and to eat a healthy, balanced diet."
When it comes to
cleansing the body of toxins, it’s best to leave it to itself.
Find more health
myths in Don't Swallow Your Gum!, co-written by Drs. Rachel Vreeman and Aaron Carroll.
People who
work out in the morning reap a ton of benefits. Many report better moods, more
energy throughout the day and greater alertness. Thy also appear to have
better, longer workouts.
A study
from the U.K. found that morning exercisers work out harder. Translation? They
burn more calories, which means they’re more likely to lose more weight.
Another
study in the American Journal of Clinical Nutrition found that exercisers who ate
breakfast were more satisfied by this meal. Some reported lower appetite
throughout the day. Researchers asked 58 obese men and women to expend 500
calories daily and eat a regular breakfast of toast, tea and cereal to shed
pounds.
“The effect of exercise on appetite regulation involves at
least two processes,” authors write, “an increase in the overall drive to eat,
and a concomitant increase in the satiating efficiency of a fixed meal.”
Authors say it is the strength of this effect that determines weight loss.
All 58 participants reported being hungrier after exercise,
but those who lost less weight reported feeling less satisfied by other meals. Although they were satisfied by
breakfast, they actually remained hungrier throughout the day. Their
counterparts had less of an appetite.
“These
data confirm that exercise has the capacity to alter the sensitivity of the
appetite regulatory system via the compensatory response to consumed foods or
preloads,” authors explain.
Despite the differences, all participants lost some weight.
Researchers attribute differences in the amount of weight lost may be due to
the lack of regulation for other meals. In any case, eating a regular breakfast
appears to increase morning meal satisfaction.
“The exercise regimen apparently raised the sensitivity of
the physiologic signaling system,” authors write, “which allowed the same
amount of food to realize a greater suppression of hunger.”
More than 2,500 adults from Adelaide, Australia, participated in a study correlating leisure-time computer use with body weight. Participants filled out a questionnaire, reporting web usage (excluding work-time computer use) and other low-energy leisure activities.
Participants were divided into sub-groups based on how much
time they spent on the Internet—no use, low use (less than 3 hours per week),
or high use (greater than 3 hours per week).
“Adults with high leisure-time Internet and computer use were more likely to be overweight or obese even if they were highly active in their leisure time, as compared to participants who did not use the Internet or computer,” study authors write.
The average time spent on the Internet was 125.3 minutes per week. Participants with high use were 1.46 times more likely to be overweight and 2.52 times as likely to be obese. They were also 2.5 times more likely to do other low-energy activities, such as watching television, for five or more hours per day.
“These findings suggest that, apart from nutritional and physical activity interventions, it may also be necessary to decrease time spent in sedentary behaviors, such as leisure-time Internet and computer use, in order to reduce the prevalence of overweight and obesity,” the authors write.
Although the results of the study are suggestive, study authors explain that there were limitations that may have affected the outcomes.
“The strong associations of leisure-time Internet and computer use with overweight and obesity may in part be explained by the association of leisure-time Internet and computer use with other leisure-time sedentary behaviors."
Further investigation on leisure-time computer use will provide more information on the effects of internet usage on health and weight.
After menopause,
many women experience weight gain, which increases the risk of developing
metabolic conditions. For women with type 2 diabetes, weight loss and glucose
management can become extremely difficult to manage. Researchers found that
both CLA and safflower oil proved particularly beneficial to postmenopausal
women with type 2 diabetes.
CLA, conjugated
linoleic acid, is an unsaturated fatty acid found primarily in meat and dairy
products of cows, goats and sheep. CLA has been known to help people wishing to
build muscle, lose weight and prevent heart disease.
Safflower oil is a
plant-based oil similar to sunflower oil that is used in cooking oils, salad
dressings and some margarines. Safflower oil, SAF, is a colorless and
flavorless source of omega-6 fatty acids, and has been known to promote
healthier skin and hair, reduce cholesterol and boost the immune system.
Thirty-five women
completed a 36-week study comparing the effects of CLA and safflower oil on
weight and body mass. Each supplement was consumed for sixteen weeks. Participants
took roughly two teaspoons of either oil daily.
CLA began to cut
body fat and reduce BMI after just eight weeks. “This magnitude of reduction
has not been reported in an intervention that used a linoleic acid-rich oil,”
wrote lead authors Martha Belury and Leigh Norris, both from the Department of
Human Nutrition at OSU.
Safflower oil,
originally meant for baseline comparison, yielded exciting changes of its own.
Safflower oil reduced trunk mass and increased lean muscle mass, resulting in
an average loss of 6.3 percent of body fat. It also reduced insulin resistance
and fasting blood glucose levels.
“I never would have
imagined such a finding,” Belury says. “This study is the first to show that
such a modest amount of linoleic acid-rich oil may have a profound effect on
body composition in women."
Belury and
associates are pleased with the results of their study, and hope to explore the
effects further. They believe that CLA and safflower oil show great promise in
weight and glucose management for women with type 2 diabetes.
“It is possible
that further reductions in BMI are achievable with a longer length of
supplementation,” the authors wrote. “The use of lower doses of CLA over longer
durations of intervention may prove to be an effective weight-loss aid."
The study appears online in The Journal of Clinical Nutrition.
It’s not always easy to find time to eat together, but a study published in the May issue of the Journal of Adolescent Health found that frequent family meals improve the eating habits and attitudes of middle school-aged children. Students who dined with their families six or seven times a week consumed fewer soft drinks, ate breakfast more often, ate more healthfully, and exhibited less concern about undue weight gain.
While obesity prevention has long been the focus of figure-conscious adults, a new Harvard Medical School study suggests that parents should also monitor the weight of their infant children. The study, released Monday and published in the April issue of Pediatrics, found that rapid weight gain during the first six months of life may put children at risk for obesity by the age of three.
It’s NCAA college basketball tournament time again and the "March Madness" can make your heart rate and blood pressure rise. This is especially true if you are watching your favorite team in a close game or sitting there helpless as a bracket-busting mid-major team ousts your championship pick in the first round. While this elevation in blood pressure is temporary, for sports fans there may be no better time to think about the lasting effects that chronic high blood pressure can have on your health, effects that may include kidney failure, heart disease, stroke, and early death.
The American Heart Association (AHA) has come up with a series of tips for ways to help control your high blood pressure at any time of the year. Follow these 10 tips and the AHA says you may be able to lower your high blood pressure to a healthier level:
Talk to your doctor to find out more information on lowering your blood pressure and keeping it low. To learn about preventing high blood pressure before it occurs, see "How can I Prevent High Blood Pressure" in the Healia Health Guide to High Blood Pressure.
Source: American Heart Association, 10 Ways to Control Your High Blood Pressure, Reviewed 01/08. http://www.americanheart.org/presenter.jhtml?identifier=578
Photo: KitAy, Flickr, Creative Commons
Many of us will soon be making New Year’s resolutions about
improving our health or losing weight. Resolving to be healthier is one thing,
but how do you actually achieve that goal. Below are some quick tips from the
Department of Health and Human Services to help you eat healthy.
To stay healthy, your body needs a balance of the right vitamins, minerals, and other nutrients. A healthy diet means that you are eating:
Eating healthy also means staying away from foods that have a high calorie content or low nutritive value. A healthy diet means staying away from foods that contain:
You can use the USDA’s MyPyramid Menu Planner to help you choose healthy snacks and meals. Visit the Healia Health Community on Diet and Nutrition to connect with other people who are interested in eating healthy.
Related Blog Post: FDA Warns Consumers to Stay Away from
Diet Pills Sold Online.
Source: Department of Health and Human Services, .
Photo: Sauri, Flickr, Creative Commons
Many common winter holiday activities can help you burn off
the extra calories you consume by eating big meals and holiday treats. Below is
a list of winter holiday activities and the number of calories you will burn if
you engage in them for one hour. The number of calories burned is based on a
person weighing 150 lbs. If you weigh more, you will burn more calories, and if
you weigh less you will burn fewer calories.
|
Cross-country
skiing |
612
calories |
|
Snowshoeing |
544
calories |
|
Ice
skating |
476
calories |
|
Sledding |
476 calories |
|
Shoveling
snow |
408
calories |
|
Splitting
firewood |
408
calories |
|
Dancing |
306
calories |
|
Decking
the halls and tree |
247
calories |
|
Building
a snowman |
238 calories |
|
Baking
cookies |
170
calories |
|
|
157 calories |
|
Caroling |
129
calories |
|
Writing
holiday cards |
123 calories |
For more information about physical activity, join the
Healia Health Community on Exercise and Fitness.
Source: Indiana State Department of Health www.in.gov/isdh/
Photo: Derek Faulkner, Flickr, Creative Commons
This
year, several states in the South rank as the least healthy states in the
United States. Every year, America’s Health Rankings, a collaborative
partnership between United Health Foundation, the American Public Health
Association, and Partnership for Prevention, provides an annual analysis of
national health on a state-by-state basis, ranking them from the most to the least
healthy. Researchers analyzed 22 different health measures, which are a
combination of health determinants and health outcomes, to compile the
rankings. Health determinants are factors that can affect the future health of
a population. Health outcomes measure what has already occurred, either through
death or missed days due to illness.
This year’s top 10 least healthy states are:
Related blog post: The Top 10 Healthiest States in America
Source: America’s Health Rankings, 2008. http://www.americashealthrankings.org/2008
Photo: colros, Flickr, Creative Commons
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