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Fight against fat goes high-tech with new devices

Fight against fat goes high-tech with new devices

The fight against fat is going high-tech. To get an inside look at eating and exercise habits, scientists are developing wearable wireless sensors to monitor overweight and obese people as they go about their daily lives.

The experimental devices are designed to keep track of how many minutes they work out, how much food they consume and even whether they are at a fast-food joint when they should be in the park. The goal is to cut down on self-reported answers that often cover up what’s really happening.

In a lab in this Los Angeles suburb, two overweight teenagers help test the devices by taking turns sitting, standing, lying down, running on a treadmill and playing Wii. As music thumps in the background, wireless sensors on their chests record their heart rates, stress levels and amount of physical activity. The information is sent to a cell phone.

“I can’t feel my legs,” 15-year-old Amorette Castillo groans after her second treadmill run.

Traditional weight-loss interventions rely mainly on people’s memory of what they ate for dinner and how many minutes they worked out. But researchers have long known that method can be unreliable since people often forget details or lie.

The new devices are being designed in labs or created with off-the-shelf parts. Some similar instruments are already on the market, including a model that tracks calories burned by measuring motion, sweat and heat with armbands.

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Thin thighs – maybe not your heart’s desire

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Thin thighs – maybe not your heart’s desire

People who have agonized over their fat thighs might be able to relax a bit — Danish doctors said on Thursday they found patients with the thinnest thighs died sooner than the more endowed.

Obesity, age, smoking and other factors did not reduce the effect, the researchers reported in the British Medical Journal.

“Our results suggest that there might be an increased risk of premature death related to thigh size,” Berit Heitmann of Copenhagen University Hospital and Peder Frederiksen of Glostrup University Hospital wrote.

The explanation may lie in many different studies that suggest where you gain your weight is a strong factor in how it affects health. People with lots of abdominal fat — wrapped in and around the internal organs — appear to be at higher risk of heart disease, diabetes, and other ills.

So-called pear-shaped people may have lower risks, even if they have more body fat overall.

Heitmann and Frederiksen studied 1,436 men and 1,380 women taking part in a larger medical research study who were examined in 1987 and 1988, then watched them for more than 12 years.

Men and women whose thighs were less than 24 inches in circumference were more likely to die during those 12 years, they found.

Those with the thinnest thighs — less than 18 inches — were more than twice likely to have died within 12 years, they reported in the study, published here

Dozens of studies have shown waist size can also be a good predictor of heart disease and death.

Women with a waist circumference of greater than 35 inches and men whose waists are more than 40 inches have a much higher risk of heart disease, diabetes and early death than people with smaller waists — regardless of how much body fat they have overall.

This is again linked to abdominal fat. Fat laid down under the skin, as when it is found on the legs, may be healthier for the body, although the mechanism is unclear.

The Danish team said they hoped thigh measurements might be an equally good indicator. But Dr. Ian Scott of Princess Alexandra Hospital in Brisbane, Australia, disagreed, saying the statistics in the Danish study were too limited.

He said larger studies would need to be done before doctors could decide that thigh measurement was any kind of good predictor of health.

“It seems unlikely that thigh circumference will be clinically useful,” Scott wrote in a commentary.

Tim Olds, a professor of Health Sciences at the University of South Australia, saw some value in the study, however.

“This is a very interesting line of research, because it would suggest that interventions which protect or increase muscle mass (such as weight training) may be effective in reducing cardiovascular disease even if no loss of body fat occurs,” Olds said in a statement.

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Brain Stem Tumor Operation

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Brain Stem Tumor Operation

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Brain Stem Tumor Operation in sitting position by Prof Nazir Ahmad Lahore Pakistan.

Brain tumors are tumors that grow in the brain. A tumor is an abnormal growth caused by cells reproducing themselves in an uncontrolled manner.

When doctors describe tumors in parts of the body other than the brain, they use the words benign (meaning harmless) or malignant (meaning cancerous). These meanings change, however, when referring to tumors in the brain.

Benign brain tumors:

A benign brain tumor consists of benign (harmless) cells and has distinct boundaries. Surgery alone may cure this type of tumor.

Malignant brain tumors:

A malignant brain tumor is life-threatening. It may be malignant because it consists of cancer cells, or it may be called malignant because of its location. In other words, a brain tumor composed of benign cells–but located in a vital area–is still considered malignant.

A malignant brain tumor made up of cancerous cells may spread or seed (metastasize) to other locations in the brain or spinal cord. It can invade and destroy healthy tissue so it cannot function properly. Malignant tumors grow the way a plant does, with “roots” invading various tissues. Or, they can shed cells that travel to distant parts of the brain. Some cancerous tumors, however, remain localized.

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