Loud, prolonged snoring interrupted with gasps and pauses in your breathing may signal a condition called sleep apnea. This cause and effect can be the result of an airway obstruction resulting in a drop in your oxygen level as you sleep. However, there are several reasons, other than sleep apnea, that can cause a reduction in blood oxygen levels. Each time you stop breathing, the amount of oxygen in your blood drops.
Eggs are obviously not dairy. In any case, the reason strict vegetarians would not eat eggs is not because they are animal products (that would be the reason vegans would not eat eggs) but rather because eggs might be fertilized and therefore are a potential life.
Eliminating dairy from the diet has no impact on iron status since milk is a very poor source of iron. Furthermore, the iron in egg is not readily bioavailable. Hence, the vegan is not considered to be at any greater risk of iron deficiency compared with other vegetarians.