the.com/endocrinology
the science of how a few molecules quietly run your entire life from backstage
means The branch of medicine and biology that studies hormones, the glands that secrete them, and the disorders that arise when this chemical signaling goes awry.
from Built from Greek pieces: endo- 'within,' krinein 'to separate, secrete,' and -logia 'study of.' The krinein root is a busy one — it also gave us 'crisis' and 'critic,' all sharing the sense of separating or sifting. So 'endocrine' literally means 'secreting within' (into the blood), distinguishing these glands from exocrine ones that secrete outward through ducts. The word arrived in the late 19th century, once scientists realized certain organs poured their products straight into the bloodstream rather than down a pipe.
- tiny dosage
- hormones act at billionths of a gram
- slow discovery
- insulin first purified only in 1921
- master gland
- pituitary is smaller than a pea
- mood control
- thyroid hormone shapes energy and temperament
- gut secret
- intestines make more hormones than any gland
frederick banting — discovered insulin in 1921, revolutionizing diabetes treatment
henry harlow — identified oxytocin and vasopressin in the pituitary gland, 1950s