The disease arises when plaque (cholesterol, fat, and calcium) accumulates inside the arteries, restricting blood flow. Eventually the arteries can become blocked and cause serious problems like a heart attack or stroke. High cholesterol, especially high LDL cholesterol and low HDL cholesterol blood levels, is a major risk for atherosclerosis, notes the NIH National Heart, Lung, and Blood Institute.
The mean or average birth weight in the United States is about 3,389g or 7 lb, 7.5 oz. However, any birth weight of a term newborn between 5 lbs, 8 oz and 8 lbs, 13 oz is considered to be normal. In 2013, there were: 55,947 births at 1499g or less (3.3 pounds or less)
1 In a twin pregnancy. the average is 37 weeks. for triplets 34 and quadruplets 32 weeks.  The average birth weight for singletons is 7 lbs 7 oz. Average birth weight of twins is 5 lbs 5 oz. for triplets 4lbs and quads 3lbs. A difference in birth weight between multiples is not unusual.