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Effects of Hot baths on inflammation, glucose metabolism

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According to new research, a hot bath could have effects that extend way beyond mental relaxation. According to the authors, regular hot baths might reduce inflammation and improve metabolism.

Over recent years, hot baths, saunas, and other so-called passive heating therapies have received growing attention from scientists.

Scientists now believe they offer some potential benefits, including improved vascular function and sleep.

Because hot baths are low cost and unlikely to cause significant side effects, understanding any benefits that a hot bath might have could be a quick win for medical science.



Recently, researchers set out to understand whether hot bath immersion could have an impact on metabolic disorders, such as diabetes.

 Almost 20 years ago, a paper concluded that hot water immersion of individuals with type 2 diabetes enhanced insulin sensitivity. However, it is still unclear how this might occur.

In the most recent study, the researchers dug a little deeper into the mechanisms at work. They theorized that the influence of a hot bath over glucose metabolism might revolve around the inflammatory response.

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Inflammation and insulin resistance

There is some evidence that chronic, low-level inflammation increases insulin resistance. In other words, inflammation reduces a cell’s ability to respond to insulin, potentially contributing to the development of diabetes.

Conversely, exercise has been shown to reduce inflammation and improve insulin sensitivity — meaning that the body has better control over glucose levels.

Although doctors often recommend exercise to reduce the risk of developing metabolic disorders, not everyone can exercise — perhaps due to health conditions or physical capacity. It is, therefore, essential to find alternative ways to improve insulin sensitivity for these people.

Exercise, as with other physical stressors, sparks a brief inflammatory response, followed by a more extended anti-inflammatory response. The researchers wanted to see if a different type of physical stressor — a hot bath — might have a similar effect on the immune system.

For this study, the researchers investigated the impact of a hot bath on overweight, mostly sedentary men. The findings were published recently in the Journal of Applied Physiology.

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Hot bath intervention

Each participant immersed themselves in a water bath set at 102°F (39°C) for 1 hour. Scientists took blood just before and after the bath, and then 2 hours later.

Also, the researchers charted the participants’ blood pressure, body temperature, and heart rate every 15 minutes.

 Over the following 2 weeks, the participants had a further 10 hot water immersions.

The researchers found that a single hot water immersion caused a spike of interleukin — a marker of inflammation. Similarly, there was an increase in nitric oxide (NO) production.

The spike in NO is important because it causes blood vessels to relax, lowering blood pressure. NO also improves glucose intake into tissues, and scientists think it has anti-inflammatory properties.



As expected, the 2-week intervention saw a reduction in fasting blood sugar and inflammation. In the same way that exercise influences inflammation, the researchers saw an initial increase followed by a long-term decrease in inflammation.

The researchers also write that it “might have implications for improving metabolic health in populations unable to meet the current physical activity recommendations.”

It is important to note that the people who took part in the study did report some discomfort. This was either due to the length of time that they were required to stay in the bath or the high temperature. Future research might investigate whether shorter periods or lower temperatures might have similar benefits.

Of course, hot baths alone cannot treat metabolic disorders, but they may be a simple, cost-effective intervention that can run alongside other treatments.

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Health & Lifestyle

DR Congo blame Unending Ebola Outbreak on Violence , Community Mistrust.

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DR Congo Ministry of Health spokesperson Jessica Ilunga has declared that violence and community mistrust have continued to hamper all efforts to control and end the fresh Ebola outbreak, which started Aug. 1.



Though according to the World Health Organization the number of new Ebola cases has dropped slightly in the Democratic Republic of the Congo as there are 33% fewer cases to date in February compared with the same time period in December per STAT’s Helen Branswell, but some experts warn Axios that there remain signs that this outbreak is far from over.

Meanwhile, some experts warn that, that doesn’t mean the world’s second-largest Ebola outbreak on record is yet under control, and in fact it could simply be moving to new areas of the sprawling country.

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Johns Hopkins’ public health expert Jennifer Nuzzo maintains there are several reasons people should continue to view this outbreak as a cause for concern.

However, Nuzzo said Congo needs more than money from the international community and the U.S. in particular. Safety concerns have largely caused the CDC to limit its Ebola experts to the capital city of Kinshasa, where some have returned after being evacuated during an uptick in election-related violence, Nuzzo added that Now is the time for the U.S. to send them into the field.

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Health & Lifestyle

Sports head injuries Balanced reportage is required – Experts

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A group of more than 60 leading international neuroscientists, including Mark Herceg, PhD, a neuropsychologist at Northwell Health’s Phelps Hospital in Sleepy Hollow, NY, and a member of The Feinstein Institute for Medical Research, published a correspondence today in The Lancet Neurology, asking for balance when reporting on sports-related injury chronic traumatic encephalopathy (CTE). CTE is a type of dementia associated with exposure to repeated concussions, and has been linked with a variety of contact sports such as boxing, football, American football and rugby.



Although CTE is commonly featured in the news media and discussed among peers, the medical community is just beginning to understand how to recognize the disease, guidelines for how to assess its severity have yet to be established.

“We don’t currently have a clear understanding of the link between CTE pathology and any specific symptoms,” noted Dr. Herceg. “It’s important to note to the public at large that CTE is at an early stage of scientific and medical understanding, with many important aspects of the disease yet to be established.”

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“Dr. Herceg and his colleague’s CTE research is timely and impactful as a major step forward to more clearly defining the risk and prevalence of this important syndrome,” said Kevin J. Tracey, MD, president and CEO of the Feinstein Institute.

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-Northwell Health

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