Oyster
salt-water bivalve mollusc
Should oysters be avoided by people with ADHD?
Oysters are an excellent source of zinc. ADHD is  a mental disorder of the neurodevelopmental type characterized by difficulty paying attention. Zinc supplementation has been reported to improve symptoms of ADHD and depression.
Which metal are oysters are known to be an excellent source of? Is the consumption of #1 known to worsen symptoms of ADHD?