This is the Dr. John R. Christopher method and with all his methods the patient would be on a mucusless diet and bowel corrected long before anyother problem would be considered.
The mucusless diet saves a person allot of money and they live much longer. I would suggest the hair will not return until the complete health of the body is 100% restored. If I was a poor person (poorer than I am) I would eat grass. This is spring in my area and the grass taste great, all the dandelions are blooming and they are sweet in the early Spring. Eat all the things that are green and look like grass, clover, dandelions, strawberry leaves, raspberry leaves, etc. outdoors at this time of year is just about all food.
The best stories I have ever read have been by very old men that decided to eat grass, not only did they receive a new head of hair, but teeth also. This is the poor mans diet and one you will love if you ignore what others say. Eat a little dirt now and then as you get stronger. Some of the strongest people on earth eat nothing but dirt for weeks when at war.
If you ignore all the bull, everything is nothing but modified sunlight. So everything but sunlight is second hand or worse. If you learn to live on sunlight, you won't care about your hair or much of anything else this world worries about.