UofL: excess sun may provoke plaque buildup in arteries

March 21, 2024  16:14

American scientists have found out that staying in the air during a heat wave can increase inflammatory processes and increase the risks of cardiovascular diseases.

According to the University of Louisville (UofL) website, 624 adult volunteers participated in the study organized by University of Louisville staff. From May 2018 to September 2019, blood samples were taken from them in the summer to record the number of inflammatory markers. The average temperature on the days of the tests was 24.5 degrees Celsius.

The scientists studied the levels of basic compounds that the immune system generates when it detects damage - T and B cells. The levels of cytokines (signaling molecules that can trigger inflammation in the body) were also analyzed.

Inflammatory markers were then compared to levels of heat, UV light, wind, and humidity. These factors were combined into a Universal Thermal Climate Index (UTCI).

It turned out that each five-point increase in UTCI caused an increase in the number of natural killer T-cells in the participants' blood. Killer cells are cells of innate immunity that destroy pathogens. Their activation is also an indicator of triggering inflammation in the body.

Inflammation remains the body's natural defense algorithm against infection. However, a prolonged inflammatory response plays a key role in the appearance of plaques in the arteries. They block the lumen of the vessels, making it difficult to supply normal blood to organs and tissues. Which can lead to coronary heart disease and heart attack.

We have also recently been reminded of what foods should be mandatory on the menu to protect the heart and blood vessels from pathologies.

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