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News on Health & Science

Is Zinc Really Good for a Cold?

A review of the medical research on zinc shows that when it is taken within one day of the first symptoms, it can cut down the time you have a cold by about 24 hours. It also greatly reduces the severity of symptoms.

The authors of the review did not make any suggestions as to what type of zinc product to buy. They also did not suggest an optimal dose or formulation, stating that more research was needed before such a recommendation could be made.

Zinc supplements also have downsides — they can cause nausea and a bad taste in the mouth, and they may interfere with your body’s uptake of other key minerals.

According to the New York Times:

“Zinc experts say that many over-the-counter zinc products may not be as effective as those studied by researchers because commercial lozenges and syrups often are made with different formulations of zinc and various flavors and binders that can alter the effectiveness of the treatment.”

Colds are transmitted only by droplets, such as from sneezing, that come from a person who’s infected. These droplets can, however, remain on surfaces for some time. Colds normally last about seven days.

Cold medicines are not recommended for children under 4, and no cold medicines are cures — they only relieve symptoms. Washing your hands is still the number one recommended way to keep yourself free of colds.

Resources:
New York Times February 15, 2011
CNN February 16, 2011
The Cochrane Collaboration Reviews: Zinc

Posted By Dr. Mercola | March 03 2011

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Healthy Tips

Blue Light May be Key to Fighting Winter Blues

As winter approaches and the days get shorter, your mood may get darker too. Sunlight deprivation can make people feel lethargic, gloomy, and irritable, and for some it can lead to the condition known as seasonal affective disorder, (SAD). or winter depression.
click & see
This can make you feel lethargic, gloomy, and irritable. However, while daylight as a whole is beneficial to fight off the syndrome, different colors of light seem to affect your body in different ways.

Click to see :7 Signs of Seasonal Affective Disorder

Blue light can affect your mind, including mood. And according to a new study, blue light might play a key role in your brain‘s ability to process emotions. The study results suggest that spending more time in blue-enriched light could help prevent SAD.

CNN reports:
“Studies have shown that blue light improves alertness and mental performance … The researchers discovered that blue light, more so than the green light, seemed to stimulate and strengthen connections between areas of the brain involved in processing emotion and language.”

Resources:
*CNN October 27, 2010
*Proceedings of the National Academy of Sciences November 9, 2010; 107(45):19549-54

Posted By Dr. Mercola | December 14 2010

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Healthy Tips

Study Says Sleep More to Loose Weight

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If you’re trying your best to eat right and exercise, it might be worth it to make sure you get the proper amount of sleep each night, according to a new study that suggests lack of sleep can throw off a diet.

According to CNN Health, research from the University of Chicago showed that dieters who slept for 8.5 hours lost 55 percent more body fat than dieters who slept 5.5 hours

“The dieters who slept less reported feeling hungrier throughout the course of the study,” CNN said, even though “they ate the same diet, consumed multivitamins and performed the same type of work or leisure activities.”

The study authors concluded that “Lack of sufficient sleep may compromise the efficacy of typical dietary interventions for weight loss and related metabolic risk reduction,” CNN said. The study was released October 4 in the Annals of Internal Medicine.

Source:CNN Health October 4, 2010

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News on Health & Science

Toolkit Helps Parents Recognize a Child’s Risk of Obesity

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Some simple interventions used by pediatricians were enough to change a parent’s perspective about a child’s being overweight or obese, and change the parent’s behaviors at home to reduce those risks.
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Researchers confirmed previous reports that parents of overweight or obese children do not recognize their child’s weight problem. But this time, by arming pediatricians with a “toolkit,” an easily used chart and a series of questions and suggestions, the researchers addressed several problems.

“Doctors often don’t have time to discuss overweight; they don’t have the tools to do it; and many aren’t confident that they’re going to make a difference in their patients’ lives,” said Eliana Perrin, lead author of the study.

“Also, parents don’t recognize weight problems or don’t know how to make things better, and even if they do, there are often barriers to healthier eating or more activity for these families,” says Perrin.

As First Lady Michelle Obama‘s “Let’s Move!” campaign aims to reduce childhood obesity – almost one-third of young people are overweight – two leading questions are how to affect that change and if it can be successful.

Perrin’s study is likely the first evidence that a parent’s assessment of their child’s weight can be changed. Her study also showed improved dietary behaviors in children and reduced time playing video games or watching television, called “screen time.”

“We found something we can do to help stem the obesity epidemic,” says Perrin, whose previous research in childhood obesity has shown that using a body mass index, or BMI, chart color-coded like a traffic light helps parents understand the often confounding measurement.

Perrin’s research group trained pediatric resident physicians on how to use the color-coded BMI chart and a revision of a questionnaire called “Starting the Conversation,” originally designed by Alice Ammerman, a co-author on the study. The STC gives health care providers a snapshot of potential red flags to help counsel patients as well as tips to implement change.

Parents were asked about their children’s weight status and discussions about weight in the doctor’s office. The Starting the Conversation form used in this study was revised by Perrin and asked parents about non-healthy eating habits – frequency of sugary snacks, sugar-sweetened beverages and eating out at restaurants, as well as activity and screen time. It also asked about the parent’s readiness to change. The pediatrics residents were instructed to show parents their children’s weight status in a color-coded BMI chart and were taught to use the parents’ responses to the questionnaire to engage the parents in discussions about healthier eating behaviors and activities.

Researchers enrolled 115 children ages 4 to 12 who were covered by Medicaid or the State Health Insurance Program and repeated the Starting the Conversation questionnaire as well as questions about weight status at one-month and three-month follow-up appointments.

The study showed the most significant improvement in dietary changes among children who were overweight. At follow up, they were more likely than healthy-weight children to drink lower-fat milk and showed the largest reduction in the frequency of eating out. But overall, children improved fruit and vegetable consumption, decreased sweetened beverages and unhealthy snacks, drank lower-fat milk more and reduced screen time.

In the initial visit, all of the parents of healthy-weight children accurately perceived their child’s weight. However, only 57 percent of overweight children’s parents did so at baseline. That improved significantly to 74 percent at three month follow up.

BMI was measured and tracked and a few children became more overweight, while more reached healthier weights but no significant improvements in weight status were noted in this short study, Perrin says. “The research has to be replicated and expanded, and it must determine if improvements in parental perception of children’s weight motivates families to improve behavior and, ultimately, leads to healthier weight over time,” she says.

“Everyone’s talking about BMI and we have a lot of studies to show that parents do not see their overweight children as overweight. That often does not sink in with parents,” Perrin says. “This is the first time we’ve seen a changed perspective from parents. We hope that parents who know their children are overweight will be empowered to help them achieve healthier lifestyles that can last a lifetime.”

Source: Elements4Health

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Health Quaries

How Much Sunshine is needed to Make Enough Vitamin D?

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Vitamin D deficiency is quite common, and a growing list of diseases and conditions are being linked with it. Regular sun exposure, without sunscreen, causes your skin to produce vitamin D naturally. But how much sun do you need?

CLICK & SEE
You’ve probably seen some vague guidelines, recommending “a few minutes every day.” But these recommendations are far too general to be useful. The amount of sun you need to meet your vitamin D requirements varies hugely, depending on your location, your skin type, the time of year, the time of day, and even the atmospheric conditions.

The Vitamin D/UV Calculator
Scientists at the Norwegian Institute for Air Research have devised a calculator that will take all those factors into consideration and estimate how many minutes of exposure you need for your skin to produce 25 mcg (the equivalent of 1,000 International Units) of vitamin D.

It’s not the most user-friendly interface and it is very easy to enter the wrong information. But once you get past the technicalities, it’s very interesting to see how much the answers change when you vary the input.

It is also not written for US cities so you can go to this page to find out latitude and longitude of many cites and enter the numbers manually. The easiest way may be to simply google “altitude of [your town]”. Remember to convert it to kilometers. One kilometer is about 3300 feet.

If your latitude is 39 S, enter -39. If your longitude is 76 W, enter -76.
You’ll also need to enter the time of day you are going out in the sun, expressed as UTC (Greenwich Mean Time). Here is a converter that will convert local time into UTC. The calculator uses a 24 hour clock, so hours from 1 PM to midnight are expressed as 13 to 24.

The calculator also wants to know the thickness of the ozone layer. I suggest just setting this one to medium.

Be sure to click the radio button next to the entries. They are often not automatically selected when you fill in the values.

Keep in mind that the exposure times given are considered enough to maintain healthy vitamin D status. If you are starting out with a vitamin D deficiency, you might need more.

Resources:

Nutrition Data August 10, 2009

CNN October 4, 2009

Times Online October 10, 2009

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