The CDC webpage "Types of Insulin" provides an overview of the various insulin types used in diabetes management, categorized by their onset, peak time, and duration of action. It explains terms like onset (how quickly insulin lowers blood sugar), peak time (when insulin is at maximum strength), and duration (how long insulin works to lower blood sugar). The page also discusses factors influencing insulin prescriptions, such as activity level, diet, blood sugar management, age, and individual insulin absorption rates.