Well..Sulphur is a metal chelator. It may be reacting with people's metal in their teeth and melting the mercury and therefore poisoning people with mercury poisoning. Swalling mercury is very dangerous and therefore ..the bad moods..and suicidal thoughts. I have high mercury in my system. Doctor huggins clinic removed 10 mercury tooth fillings. and i am now getting the mercury out with sulphur (DMSO). If someone has mercury tooth fillings in their teeth they can't use sulpher as this will melt the mercury in their mouth which they will then swallow.