Who are the people subjected to sleep apnea?

Sleep apnea. Several possibilities: some people only snore if they sleep on their back, so try avoiding that. Losing weight. See an ear nose ; throat specialist to evaluate your tonsils, adenoids and sinus wear a custom made dental device that holds your jaw forward while you sleep thereby increasing the airway.
Depends. Obstructive may be more common in obese people and those with short neck relative to their height.
Risk factors. male, overweight, and over the age of 40. However, sleep apnea can strike anyone at any age, even children at age 3. Fortunately, sleep apnea can be diagnosed and treated. See your PCP for evaluation and sleep tests.