There is also a lot of evidence that probiotics and probiotic foods can help with all sorts of digestive problems (5) This includes irritable bowel syndrome (IBS), ulcers caused by H. pylori infection, and various others (21, 22, 23, 24). For this reason, kefir may be useful if you have problems with digestion.
Bone marrow is the flexible tissue in the interior of bones. In humans, red blood cells are produced by cores of bone marrow in the heads of long bones in a process known as hematopoiesis. On average, bone marrow constitutes 4% of the total body mass of humans; in an adult weighing 65 kilograms (143 lb), bone marrow typically accounts for approximately 2.6 kilograms (5.7 lb).
Bilirubin is a substance made when your body breaks down old red blood cells, a normal process. Bilirubin is also part of bile, which your liver makes to help digest the food you eat. A small amount of bilirubin in your blood is normal. Healthy adults produce 250 to 350 milligrams (mg) of bilirubin each day.Bilirubin that is bound to a certain protein is called unconjugated, or indirect, bilirubin. Conjugated, or direct, bilirubin travels freely through your bloodstream to your liver.esults are given in milligrams per deciliter (mg/dL). Normal results of the blood test range from 0 to 0.1 mg/dL in adults. If your results on the blood test are higher, bilirubin may also show up in your urine. Urine in adults normally contains only 0.02 mg/dL. Most urine tests will not detect this amount.