Research

Hormonal

Untreated obstructive sleep apnea (OSA) severity is independently associated with worsening glycemic control (higher HbA1c) and insulin resistance in patients with type 2 diabetes, even after adjusting for obesity and other confounders.

If you have type 2 diabetes, your sleep quality matters as much as your diet. Untreated sleep apnea can significantly worsen your blood sugar control (HbA1c) regardless of your weight. Ask your doctor about screening for sleep apnea, especially if you have symptoms like snoring or daytime fatigue, as treating it may help improve your glucose levels.

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Increasing severity of untreated OSA was associated with poorer glucose control after controlling for age, sex, race, BMI, number of diabetes medications, level of exercise, years of diabetes, and total sleep time. Compared to patients without OSA (adjusted mean A1c: 5.7%), the adjusted mean A1c was 7.3% in mild OSA, 7.7% in moderate OSA, and 9.7% in severe OSA.
Sushmita Pamidi et al. · Frontiers in Neurology · 2012

Why this rating

Based on multiple cross-sectional studies with rigorous polysomnography and adjustments for confounders, though causality is not fully established.

Source

Obstructive Sleep Apnea and Type 2 Diabetes: Is There a Link?

Sushmita Pamidi et al. · Frontiers in Neurology · 2012

DOI 10.3389/fneur.2012.00126

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DOI resolved against Crossref · corpus check 2026-06-10

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