The purpose of the study is to measure markers of inflammatory and oxidative stress known to be associated with cardiovascular morbidity in snoring children.

In addition, to measure markers of local inflammation and to evaluate the response to treatment.

Inclusion Criteria:

• children ages 6 months-18 years
• suspected sleep-disordered breathing or will attend the pre-operative ENT clinic for adenoidectomy or adenotonsillectomy

Exclusion Criteria:

• craniofacial abnormalities
• neurological disorders
• genetic disorders
• infectious disease
• chronic inflammatory disease
• any underlying chronic medical condition

children ages 6 months-18 years who will undergo overnight sleep study at the Dana Children's hospital, Tel Aviv Medical Center because of snoring and suspected sleep-disordered breathing or will attend the pre-operative ENT clinic for adenoidectomy or adenotonsillectomy