Many health insurance plans have an out-of- pocket expense maximum. An out-of-pocket expense is a nonreimbursable expense paid by a patient. But out-of-pocket expenses can also include covered expenses that you are responsible for before your health-plan benefits kick in at 100 percent coverage.
The process of ketosis is one of the physiological effects of fasting in which the brain (and some other bodily processes) uses ketones produced from fatty tissues as a fuel instead of the usual glucose. This is called muscle sparing.
After 72 hours, ketosis continues as long as there is enough fat in the body. Prolonged fasting can lead to a state marked by harmful levels of ketone bodies and high levels of acidity in the blood. Ketosis usually starts after 48 hours for women and 72 hours for men. Note that ketosis is different than ketoacidosis.