Acontinuous, uncontrollable anxiety or worry that occurs almost on a daily basis during a period of six months and that is not due to any physical causes such as disease, drugs, or drinking too much coffee is called

A continuous, uncontrollable anxiety or worry that occurs almost on a daily basis during a period of six months and that is not due to any physical causes such as disease, drugs, or drinking too much coffee is called generalized anxiety disorder.
Drinking too much coffee can cause anxiety more worse and even it leads to anxiety attacks. caffeine is a psychoactive drug. There are some benefits of drinking coffee but drinking too much coffee has side effects.

If you eat to much it could kill you.