Is hypoglycemia hereditary?
Heredity can be one of the causes too. There actually is such thing as hypoglycemic families. As with diabetes, there is a possibility of getting the symptoms if it runs in your family, but as with most hereditary diseases this also depends on your diet and way of life (both nurture and nature). There are different opinions about the question whether increased diabetes risk (e.g. because of your diabetic grandma) implies both increased diabetes and hypoglycemia risk, or just diabetes.