Guests: John Batchelor, Dr. David Livingston, Dr. John Jurist. Topics: Bone loss issues for short and long duration spaceflight. You are invited to comment, ask questions, and discuss the Space Show program/guest(s) on the Space Show blog, http://thespaceshow.wordpress.com. Comments, questions, and any discussion must be relevant and applicable to Space Show programming. Transcripts of Space Show programs are not permitted without prior written consent from The Space Show (even if for personal use) & are a violation of the Space Show copyright. The Space Show/OGLF is now engaged in its annual fundraising drive. Please see & act upon our appeal at http://thespaceshow.wordpress.com/2011/11/21/space-show-2011-fundraising.... As many of you know, I have been doing a weekly segment on the John Batchelor Radio Show with Mr. Batchelor on various space topics. Sometimes I appear with John as the only guest on the segment, at other times I co-host the segment with John and bring on board an expert in the subject being discussed. Mr. Batchelor has given The Space Show permission for these segments to be archived on The Space Show site and blog. Mr. Batchelor calls these segments "Hotel Mars" and they are targeted toward his significant live and podcast highly educated general audience. Find out more about the excellent John Batchelor Show and listen to his archived segments at http://johnbatchelorshow.com. You can hear the live stream of his show if it is not carried live in your radio market at www.wabcradio.com/article.asp?id=531472. For this segment of Hotel Mars, we discussed bone loss in space and the use of the class of drugs known as bisphosphonates in treating bone loss issues. This discussion was prompted by various news reports such as this one: www.dispatch.com/content/stories/national_world/2011/12/06/osteoporosis-.... Our special guest was Dr. John Jurist and I co-hosted the segment with Mr. Batchelor. During our eleven minute segment, we addressed bone loss issues for both short duration and long duration spaceflight. We talked about the use of bisphosphonates, the benefits and the risks associated with them. We also addressed artificial gravity, issues of both lunar and Martian gravity, and the seriousness of the bone loss issue as well as the other human factors issues primarily for the longer duration voyages. Post any comments/questions that you might have regarding this John Batchelor Show segment on The Space Show blog URL above. We thank Mr. Batchelor for allowing us to archive this segment on The Space Show website and blog. Please note that the copyright to this material remains with The John Batchelor Show. Any and all uses of this material must be approved by John Batchelor.