First, you have to take out the prefix "hyper" which mean excessive. Then you have the "gammaglobulin" that is one of the proteins of the body that help our body immune system fight infections - along with the "White blood cells." Usually there is an inbalance between "red blood cells, or "white blood cells," as well as "gammaglobulin" respectively, also like higher or lower blood pressure - for example - of what it is considered normal. Hypergammaglobulin, refers to
higher than normal, and "hypogammaglobulin" means lower than normal - like hypotension means lower than normal blood pressure. If you have hypergammaglobulin proven by a blood test, consider yourself blessed - infections-wise.