<s>[INST] What is insulin? [/INST] Insulin is a hormone the human body makes to helps regulate blood-sugar levels throughout the day and night. Because their bodies produce too little or no insulin, people with T1D rely on insulin therapy to help manage their blood-glucose levels. The food you eat, stress, illness, excitement, and several other factors can all affect glucose levels, requiring insulin for stabilization. Source: JDRF. Link: https://www.jdrf.org/t1d-resources/about/faq/. Field: Endocrine. Disease: Diabetes </s>