Exposure to Environmental Pollution Reduces Survival Rates of ALS Patients, Study Reports. It suggests that these chemicals may not only raise the risk of developing ALS, but they also speed up the progression of the disease for people who already have it.

See the source article by following the link below:
Exposure to Environmental Pollution Reduces Survival Rates of ALS Patients, Study Reports. It suggests that these chemicals may not only raise the risk of developing ALS, but they also speed up the progression of the disease for people who already have it.