Do deck chairs do any harm to old people?
Electric shoes are not only harmful to the elderly, but also harmful to young people. Of course, this injury is only relative, and it is not easy to see. The metabolism of the human body is a long-term evolution, has its own stable system, the interference of the outside world will certainly affect some of its physiological functions.
Your grandmother's lumbar disc problems vary from person to person, to see whether the elderly have kyphosis, scoliosis, heart, lung function, and other diseases and the development of treatment programs. Specialist hospital health consulting clinic will give you satisfactory answer.