Actually red blood cells do not have the longest life span of circulating blood cells-that would be differentiated memory B lymphocytes.RBCs actually have a relatively short circulating life span (about 4 months on average) because they lose their nuclei and most cellular organelles when they mature. red blood cell's life span is approximately 4 months. I am a Leukemia patient. Red Blood cells are being created all of the time, if they lasted 4 months, we would overdos â¦ e on them.
Health benefits of pears. 1  Pears fruit is packed with health benefiting nutrients such as dietary fiber, antioxidants, minerals, and vitamins, which are necessary for optimum health. Total measured antioxidant strength (ORAC value) in pears is 2941 Âµmol TE/100 g. 2  Pears are a good source of dietary fiber.
Calorie Content of Pears. According to the USDA National Nutrient Database of foods, one medium-size fresh pear provides 100 calories, 5.5 grams of fiber, 27 grams of carbohydrate and more than 200 milligrams of potassium. Bartlett pears contain 112 calories, 7 grams of fiber and 26 grams of carbohydrate, compared to Asian pears, which contain 116 calories, 10 grams of fiber and 29 grams of carbohydrates. All pears are a good source of vitamin C, meaning they provide more than 10 percent of the recommended daily value.