The term "adverse effects" refers to any negative or unwanted outcomes that result from exposure to a particular substance, treatment, or intervention. In other words, it describes the unfavorable consequences that may arise due to something being done or consumed. These effects can vary in severity and duration, ranging from mild discomfort to severe health complications or even death. Adverse effects are typically distinguished from side effects, which refer specifically to secondary symptoms resulting from a medication or treatment, as opposed to the condition being treated.