Born 21 Apr 1913; died 28 Nov 1987 at age 74.

#Chinese-American #biochemist and experimental #endocrinologist who with his co-workers isolated in pure form six of the eight #hormones known to be secreted by the anterior #pituitary gland.

Located at the base of the brain, its homones govern #reproduction, #growth, #maturation, and #metabolism.

Among the hormones Li isolated are #ACTH (the #adrenocorticotropic hormone and adrenal booster, used in the treatment of #arthritis) and #HGH (the human growth hormone or #somatotropin, which is vital for human growth). He also discovered #ß-endorphin, a naturally secreted #painkiller (1976) and was first to synthesize the #insulin-like growth factor 1, which promotes the growth of #cartilage and #bones.

He was the first to synthesize HGH, in 1970.

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