Chewing gum is the worst thing for someone with amalgams to use. Even sugar free gum is horrible, as chewing gum causes much greater levels of mercury to be released from amalgams.

As for fish, I think it is a bad idea to give up fish entirely, but one should instead just eat moderate portions of low mercury high omega 3 fish such as sardines, salmon, or herring.

http://www.gotmercury.org/article.php?list=type&type=75

As for eggs, I feel better after eating them. Garlic sometimes triggers a strong reaction as it destroys candida in the digestive tract, and the candida toxins are released and absorbed by the body.