Put yourself back in the driver’s seat of your body and brain with one simple, free tool: your breath.
Slow, light and paced, diaphragmatic breathing supports people with type 2 diabetes (T2D) by lowering stress hormones, improving blood sugar markers, and helping the nervous system relax. It won’t replace medication nor medical care, but it’s a low-risk, low-cost way to support what you’re already doing.
Breathwork influences blood sugar through several means
- Lowers cortisol – your main stress hormone.
- Helps rebalance the autonomic nervous system (an unconscious system that regulates bodily functions) through the vagus nerve.
- Reduces oxidative stress and inflammation, which are factors in major health issues like type 2 diabetes and cancer.
- Supports mood and behavior, which affects choices and self-care.
Stress + cortisol
Slow breathing helps mitigate the stress response. When cortisol drops, insulin sensitivity improves and the liver releases less glucose. Studies show that adding slow breathing to exercise programs lowers cortisol and fasting blood glucose. (https://pubmed.ncbi.nlm.nih.gov/37520826/)
Nervous System regulation
Breathing that highlights slow and paced exhalations and diaphragmatic movement increases Heart Rate Variability (HRV), which is an indicator of overall hearth health, by boosting vagal tone. (https://pubmed.ncbi.nlm.nih.gov/34491340/) Better autonomic regulation contributes to fewer stress-driven glucose spikes.
Oxidative stress
People with T2D often struggle with higher oxidative stress. Diaphragmatic breathing is linked to better antioxidant activity which helps to lower oxidative stress, supporting metabolic and vascular health. (https://www.sciencedirect.com/science/article/abs/pii/S1744388112000382)
Mood + behavior
Breathwork can lead to mindfulness. Mindfulness is, simply put, paying attention to your attention. Sounds easy but it’s deceptively hard in a modern fast-paced world. Lower anxiety and a steadier mood make it easier to follow through with medication, wise food choices, and activity — all of which help stabilize blood sugar. Mindfulness-based programs can help reduce HbA1c (a measure of blood glucose over time) levels. (https://www.mdpi.com/2305-6320/10/9/53)
It’s becoming clear that adding slow, paced diaphragmatic breathing and mindfulness can improve fasting blood glucose and cortisol levels. While this is encouraging, we still need more research, but the trend is consistent.
Practical exercises
If you take glucose-lowering medication, keep monitoring your levels and discuss changes with your clinician.
Diaphragmatic (belly) breathing — 5–10 minutes
- Place one hand on the chest, one on the belly.
- Inhale through the nose for about 4 seconds, belly rising.
- Exhale gently for about 6 seconds.
- Practice once or twice a day. A short session before meals can help.
Coherent / slow-paced breathing — 10–20 minutes
- Aim for ~5–6 breaths per minute (inhale 5–6s, exhale 5–6s).
- Keep the breath smooth and diaphragmatic.
- Practice once daily for 10–20 minutes, or try two 10-minute sessions.
Box breathing
- Inhale 4 seconds → hold 4 → exhale 4 → hold 4.
- Repeat 4–6 rounds.
- This is great to use before checking glucose or a stressful situation.
4-4-8 breathing
- Inhale 4 seconds → hold 4 → exhale 8.
- Repeat 6–10 times.
- This is a convenient way to relax or pause. especially before meals.
Tips to build a routine
- Weeks 1–2: Diaphragmatic breathing daily for 5-10 minutes.
- Weeks 3–4: Slow-paced breathing session for 10-15 minutes.
- Weeks 5–8: Combine two sessions a day (a pre-meal practice + a longer HRV-focused session).
Safety notes
Breathwork is generally safe, but start gently. Check with your clinician before changing your routine. Keep an eye on blood glucose. If levels drop more than expected, contact your provider. If you have a trauma history or anxiety, stick with slow, gentle breathing rather than forceful or rapid styles. It’s best to start this process by working with a coach trained in breathwork who understands T2D. Not only will you improve faster, you will do it in a safe and accountable way that is sustainable.
Bottom line
Breathwork is a simple, accessible tool that can support people with T2D. The strongest evidence backs slow diaphragmatic and slow-paced breathing for reducing stress hormones, improving autonomic balance, and nudging blood sugar markers in the right direction — especially when paired with exercise or mindfulness. More research is needed, but there’s enough already to recommend it as a supportive practice.