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Laser system to detect diseases faster

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Image from 2012.igem.org
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Sydney: Researchers are developing a laser system for a non-invasive, on-site breath analysis that can screen various diseases including diabetes, infections and cancer in a moment.

The team from University of Adelaide has developed an instrument like an “optical dog’s nose” that uses a special laser to measure the molecular content of a sample of gas, which can hit the market in three-five years.

“The laser system uses light to ‘sense’ the range of molecules that are present in the sample,” said James Anstie, research fellow with the university’s Institute for Photonics and Advanced Sensing (IPAS).

Those molecules are by-products of metabolic processes in the body and their levels change when things go wrong.

Diseases like lung and esophageal cancer, asthma and diabetes can be detected in this way even before external symptoms are showing, said the study that appeared in the journal Optics Express.

The system uses a specialised laser that sends up to a million different light frequencies through the sample.

Each molecule absorbs light at different optical frequencies and, therefore, has a unique molecular fingerprint.

“The next step is to work out how to accurately sample and interpret the levels which will naturally vary from person to person,” the researchers said.

Other potential applications include measuring trace gasses, such as atmospheric carbon dioxide, and detecting impurities in natural gas streams.

(IANS)

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Having Milk in Breakfast Helps in Managing The Risk of Diabetes

This study confirms the importance of milk at breakfast time to aid in the slower digestion of carbohydrate and to help maintain lower blood sugar levels

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Drinking milk at breakfast might help manage diabetes. Pixabay

If you are diabetic, then consuming milk at breakfast can help lower blood glucose level throughout the day, suggests a study.

The findings showed that milk consumed with a high-carbohydrate breakfast reduced blood glucose even after lunch, and high-protein milk had a greater effect.

Milk with an increased proportion of whey protein had a modest effect on pre-lunch blood glucose, achieving a greater decrease than that provided by regular milk.

The high-protein treatment also reduced appetite after the second meal compared with the low-protein equivalent.

“Metabolic diseases are on the rise globally, with type-2 diabetes and obesity as leading concerns in human health,” said Professor Douglas Goff, from the University of Guelph in Ontario, Canada.

Diabetes
Representational image. Pixabay

“Thus, there is impetus to develop dietary strategies for the risk reduction and management of obesity and diabetes to empower consumers to improve their personal health,” he added.

For the study, published in the Journal of Dairy Science, the team included over 100 persons to examine the effects of increasing protein concentration and increasing the proportion of whey protein in milk consumed with a high-carbohydrate breakfast cereal on blood glucose, feelings of satiety, and food consumption later in the day.

Also Read- Punjab Gets Tech-Savy and Eco-friendly

Although the team only found a modest difference in food consumption at the lunch meal when increasing whey protein at breakfast, they found that milk consumed with breakfast cereal reduced postprandial blood glucose concentration compared with water, and high dairy protein concentration reduced postprandial blood glucose concentration compared with normal dairy protein concentration.

“This study confirms the importance of milk at breakfast time to aid in the slower digestion of carbohydrate and to help maintain lower blood sugar levels. Nutritionists have always stressed the importance of a healthy breakfast, and this study should encourage consumers to include milk,” Goff said. (IANS)

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