• Alcohol- It affects the resistance of the nose and throat and increases the Apnea episodes during sleep.
• Smoking- It increases instability during sleep and inflammation of air passages.
• Patients who already are suffering with heart diseases.
• Recurrent nasal congestion due to any cause like allergy-related condition
• Menopause- It induces hormonal imbalances that can contribute to apnea.
• Obesity and excessive weight affects the breathing patterns in many ways.
  • It alters the respiratory passage structure
  • Respiratory drive is reduced
  • The demand of oxygen is increased in the body