In children sleep apnea has been linked to excess weight and obesity which can be associated with the soft tissue in the mouth and throat. One of the last things you want to do when you re tired is exercise. Pin On Sleep Facts Weight gain can certainly help to exacerbate this condition in later life. Why does sleep apnea cause weight gain . Once you know the problem you can get proper treatment and break the link causing your weight gain. In one study 1 published in the international journal of obesity for example scientists from the university of helsinki found that among 5 700 middle aged women those who struggled with sleep disorders were significantly more likely to struggle with their weight than their peers who got the recommended. Could lack of sleep be causing you to gain weight. At night during sleep the muscles in the tongue become relaxed. The answer to this question depends on the individual. Most experts consider that weight gain does not cause sleep apnea per...