In the stomach, food tends to hang around for a little longer and this depends on a variety of factors including the amount of food you have consumed, how much fat it contains, and also the acidity of the stomach. However, all food should have left the stomach within 2 to 4 hours.n the stomach, food tends to hang around for a little longer and this depends on a variety of factors including the amount of food you have consumed, how much fat it contains, and also the acidity of the stomach. However, all food should have left the stomach within 2 to 4 hours.
Episcleritis is a common condition. In most cases the problem is mild and vision is normal. The cause is often unknown. But, it may occur with certain diseases, such as: 1  Herpes zoster. 2  Rheumatoid arthritis. 3  Sjogren syndrome. 4  Syphilis.
Common causes of encephalitis include: 1  Herpes simplex virus. 2  There are two types of herpes simplex virus (HSV). 3  Either type can cause encephalitis. 4  HSV type 1 (HSV-1) is usually responsible for cold sores or fever blisters around your mouth, and HSV type 2 (HSV-2) commonly causes genital herpes.