Who said anything about inhaling pure ozone? The use of ozone is well known but the results are not verified. In theory, it can add more oxygen to the blood. Low Hb does not prevent one from finding ways to improve the efficiency of oxygen in the body, as happens through exercise and some supplements such as vitamin E. There are many members of this group, Smurfette and Kochi immediately come to mind, who will tell you how much exercise has improved their health. My young "brother" Ghiyas, in Maldives can tell you how he has managed with Hb as low as 4 without being tired because of the high amount of exercise he gets. Exercise adds oxygen to the blood and will help maximize the efficiency of Hb. It is theorized that ozone can also help in the same way.