A regimen, in the context of treatment, refers to a systematic plan designed to improve health or manage a medical condition. This plan often includes specific medications, therapies, or lifestyle changes that are followed consistently over a set period. Regimens can vary widely depending on the individual's needs and the nature of the condition being treated. For example, a cancer patient may follow a chemotherapy regimen that outlines the type and dosage of drugs to be administered, along with the schedule for treatments. Similarly, a diabetes management regimen might include dietary guidelines, exercise routines, and insulin administration to help maintain stable blood sugar levels.