Question: Does an astronaut worry about osteomalacia?, Answer:No, Description of Astronaut: Person who commands, pilots, or serves as a crew member of a spacecraft, Fact1: astronauts spend many months on a space., Fact2: In space gravity force is much smaller than on earth., Fact3: You cannot maintain appropriate bone density in low gravity environment., Fact4: Astronauts tend to have osteoporosis. , Fact5: osteomalacia is caused by severe vitamin D deficiency not lack of gravity. 
Step1: What is the primary cause of osteomalacia?, Step2: What are the health hazards associated with space travel?, Step3: Is #1 any of #2?, Wikipedia page for step 1: Osteomalacia, Wikipedia page for step 2: Space medicine, Wikipedia page for step 3: , not_definitive_answer: False, incorrect_answer: False