The sick folks that would have to use these oxygen tanks would have to be severely ill. It is that bad. You may have seen this mostly among the senior citizens of your community. It is great that they have managed to live this long but time catches up with them and both body and mind will surely wear down. Not necessarily on their last legs, they get by when they have the right medical aids to help them live and fight another day. Spare a thought for those who are cancer stricken. Victims of cancer are becoming younger every year.
One of the most damaging and painful cancers that you would not wish upon anyone is that of lung cancer. Once the tumors start to grow, the pain never goes away. Sophisticated medication of the highest order has to be utilized to at least stem the tide of pain. Those with lung cancer and emphysema cannot get by without the aid of oxygen tanks. Those fighters you may have seen with such tanks still remained a sorry sight for sore eyes. But not anymore. Gone are the days when you would see sickly, old and cancer stricken folks gasp for air and struggle for breath with masks over their faces having to remain seated with large, ancient cylindrical tanks at their side.
Today, these poor folks have oxygen to go. These oxygen tanks, however, are barely noticeable. They are discreet and light in weight. They can be carried on the person of the patient. This ensures that such folks no longer need to be bedridden or house ridden. They can now go out of doors and do the things that would be considered normal in the time they have, hopefully to recover.