Niacin has long been a public health darling. But an excess could be bad for the heart, study suggests
Before statins, niacin was seen as a way to increase good cholesterol and promote heart health. A new study calls that into question.
Niacin, or vitamin B3, has long been a U.S. public health darling to the point that it is added, by law, to cereal products. But a new study published Monday in Nature Medicine points to a potentially concerning effect of an excess of the vitamin: It may increase the risk of cardiovascular disease.
The study looked into two cohorts of patients without active heart disease, 60% of whom were treated with statins, and found a strong association between a metabolic product of excess niacin and an increased risk of major adverse cardiovascular events such as a heart attack or stroke. One in four of the people in the study had excess niacin, which doubled their risk of major cardiovascular events to levels comparable with diabetes or a previous heart attack.
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