Complex sentence: Low platelet count maybe due to decreased production of platelets in the bone marrow and the causes of low platelet count maybe due to vitamin B12 defficiency, iron deficiency, aplastic anemia, viral infections, chemotherapy, alcohol consumption, leukemia, myelodysplasia, and cirrhosis.
Split into simpler sentences: Low platelet count maybe due to the decreased production of platelets in the bone marrow. A decreased production would be due to vitamin B12 defficiency, iron deficiency, aplastic anemia, viral infections, chemotherapy, alcohol consumption, leukemia, myelodysplasia, and cirrhosis.