Does smoking affect HbA1c test results?

While smoking doesn’t directly affect HbA1c levels, it can have a negative impact on overall blood sugar control. Smoking increases insulin resistance, making it harder for the body to regulate glucose levels, which can lead to higher HbA1c readings over time. Smoking also increases the risk of complications in people with diabetes, including cardiovascular disease and poor circulation. Quitting smoking is one of the most effective steps you can take to improve your overall health and diabetes management. Your healthcare provider can offer support and resources to help you quit smoking.