How might niacin impact blood glucose levels?

Niacin, also known as vitamin B3, can impact blood glucose levels by raising them, which is particularly important for diabetic patients to consider. This effect is mainly due to the way niacin interacts with insulin sensitivity. In some individuals, particularly those with pre-existing diabetes or glucose intolerance, niacin can induce insulin resistance, leading to increased levels of glucose in the bloodstream.

As a result, when niacin is administered, it may elevate blood sugar levels, posing a risk for patients who are already managing diabetes. This is why monitoring blood glucose is essential for patients taking niacin, especially those with a history of hyperglycemia.

Other options suggest that niacin does not affect glucose levels, lowers them, or stabilizes them, which does not align with the understanding of how niacin functions in relation to glucose metabolism and insulin sensitivity.