From a Harvard news online release:
“This study identifies a new molecular connection between exercise and inflammation that takes place in the bone marrow and highlights a previously unappreciated role of leptin in exercise-mediated cardiovascular protection,” said Michelle Olive, program officer at the National Heart, Lung, and Blood Institute Division of Cardiovascular Sciences. “This work adds a new piece to the puzzle of how sedentary lifestyles affect cardiovascular health and underscores the importance of following physical-activity guidelines.”
Scientists at Harvard-affiliated Massachusetts General Hospital (MGH) have identified a previously unknown biological pathway that promotes chronic inflammation and may help explain why sedentary people have an increased risk for heart disease and strokes.
In a study to be published in the November issue of Nature Medicine, MGH scientists and colleagues at several other institutions found that regular exercise blocks this pathway. This discovery could aid the development of new therapies to prevent cardiovascular disease.
To read more: https://news.harvard.edu/gazette/story/2019/11/exercise-found-to-block-chronic-inflammation-in-mice/
From a Harvard Medical School “Harvard Heart Letter”:
Chronic inflammation often begins with a similar cellular response but morphs into a lingering state that persists far longer. Toxins such as cigarette smoke or an excess of fat cells (especially around the belly area) can also trigger inflammation. So can the fatty plaque inside arteries, which causes inflammatory cells to cover and wall off the plaque from the flowing blood. But the plaque may rupture, mingle with blood, and form a clot. These clots are responsible for the majority of heart attacks and most strokes.
A buildup of cholesterol-rich plaque inside arteries — known as atherosclerosis — is the root cause of most heart attacks and strokes. Researchers have long recognized that chronic inflammation sparks this artery-damaging process (see “Understanding inflammation”). Now, they’re zeroing in on better ways to tackle that aspect of the problem.
Addressing inflammation is vital. Even when people take steps to lower their risks for heart disease, such as reducing their cholesterol and blood pressure, they may still face life-threatening cardiovascular events.
Click on following link to read more: https://www.health.harvard.edu/heart-health/new-insights-about-inflammation