Obesity and Weight Management
Diabetes
Thyroid Diseases
Parathyroid Diseases
Dyslipidaemia (Cholesterol)
Hypertension
Osteoporosis
Adrenal Gland Diseases
Pituitary Diseases
Sleep Disorders and Hormones
Pregnancy and Endocrine Diseases
Sleep is when the body resets its hormonal balance. Growth hormone, cortisol, melatonin, the appetite hormones leptin and ghrelin, and insulin sensitivity all follow the sleep–wake rhythm.
Dr. Demirci is pursuing a PhD in Sleep Psychoneurophysiology and Polysomnography at the University of Health Sciences, Gülhane Faculty of Medicine, and has been an invited speaker on “Diabetes and Sleep Disorders” and “Sleep, Diet and Glucose Metabolism” at national diabetes and sleep medicine congresses.
Sleep and Metabolism
- Short sleep increases hunger and cravings for high-calorie foods.
- Poor and irregular sleep increases insulin resistance and type 2 diabetes risk.
- Shift work disrupts the circadian clock and raises cardiometabolic risk.
Obstructive Sleep Apnoea
Very common in obesity and type 2 diabetes and often undiagnosed. It raises blood pressure, worsens glucose control and makes weight loss harder. Weight loss can substantially improve it.
Endocrine Disorders That Disturb Sleep
Hyperthyroidism, hypothyroidism, diabetes (nocturia, night-time hypoglycaemia), acromegaly, Cushing's syndrome, menopause and low testosterone.
Patients are referred for polysomnography when appropriate, and hormonal, weight and sleep issues are managed together.
Frequently asked questions
Can lack of sleep cause weight gain?
Yes. Short, poor-quality sleep disrupts appetite hormones and increases insulin resistance.
Does snoring affect diabetes?
Snoring may indicate sleep apnoea, which worsens glucose control and increases diabetes risk.
Content on this website is for information only and does not replace a medical consultation.
