Linda, Some of the most toxic people have the lowest levels of heavy metals levels in their hair.

High levels = toxicity, low = we don't know

We also know that highly toxic people need to chelate for 3-4 years to get well. If you don't chelate it will also take several years to reduce your body burden. The brain does not clear itself usually....

if you had absolutely no symptom change/improvement from chelation this might mean that mercury is not a problem for you.

If you were mercury toxic and had your fillings out without protection you won't be clean in 12 months.