General endocrinology is the study of hormones which are essential for our everyday life. Hormones can control our sleep, moods, stress, development, and more, so they can be vital to our health. When something goes wrong with our hormones, it can be significant for us. General endocrinology researches diabetes, as it's a common hormone-related and endocrine disorder. An endocrinologist is a specialist in endocrinology and the treatment of diseases related to hormonal problems.