Sleep apnea is a grossly underdiagnosed condition that can exacerbate the neuron damage, fatigue, irritability, impaired memory, etc, of MS. Although its incidence increases with age, excess weight, male sex, smoking, diabetes, etc, it can affect people of all ages and both sexes. It also damages severely the heart, kidneys, etc, Accordingly, it may be wise to rule out sleep apnea in all MS patients and especially so in MS patients who are overweight, experience severe fatigue, have diabetes, etc, as weight, diabetes, etc, are rapidly increasing in America, the incidence of SA also increases. SA can be treated very effectively in most cases, improving quality of life and health.
The incidence of SA, MS, diabetes, osteoporosis, etc, increases with vit D deficiency, whose risk increases with latitude and age.