This is because it contains a substance called Nobiletin, a pigment found in tangerine peel, is ten times more potent than a similar one derived from grapefruit which protects from obesity and metabolic syndrome.
One group had symptoms of illness such as elevated cholesterol and triglycerides, high blood levels of insulin and glucose and a fatty liver – all of which increase the risk of diabetes and heart disease. But a second group on the same diet but who were fed Nobiletin showed no similar rise. The substance also protected them from atherosclerosis, the build-up of plaque in arteries, which can lead to a heart attack or stroke.
Eating tangerines could protect against heart attacks, diabetes and stroke as well as staving off obesity
Upsalla: Metabolic syndrome significantly boosts the chances of heart failure in middle age, suggests new research published the magazine Heart.
Metabolic syndrome refers to a cluster of conditions, including obesity, high blood pressure, unfavourable blood fat levels, and diabetes.
The researchers at the University of Uppsala, Sweden, base their findings on regular monitoring of more than 2,300 men who were aged 50 between 1970 and 1974 and who were tracked until the age of 70.
The presence of metabolic syndrome at the start of the study was strongly associated with the subsequent development of heart failure. Men with the syndrome were almost twice as likely to develop heart failure as those without.
This was independent of any other established risk factors for heart failure, such as coronary artery disease, a heart attack, smoking, and poorly working heart valves.
The authors suggest that metabolic syndrome may directly affect the heart itself as well as boosting the build up of fatty deposits in the arteries.
The likely mechanism is insulin resistance and the subsequent excess insulin circulating in the blood, say the authors. Insulin may excessively enlarge the heart muscle (myocardium), thereby impairing its capacity.
High circulating levels of insulin also stimulate the sympathetic nervous system, thought to be a risk factor in heart failure, and cause heart muscle cells to wither and/or stiffen.