BBC News reports that using a scalp cooler can prevent much of the loss of hair that often results as a side-effect of cancer chemotherapy, and features the personal experience of Melanie Rowland, who said the results had been worth the five hours of painful icy cold, because her hair is very important to her.
You can reduce your risk of most cancers and most other degenerative diseases by
1) avoiding prescription drugs unless they are really necessary and
2) minimising your intake of salt/sodium and salty food
3) giving up dieting - permanently
See Sodium in foods
Lose weight safely.
Read my Mensa article on Obesity and the Salt Connection