Before 1930, fat tissue was largely ignored by researchers and assumed to be inert, primarily serving for padding and cushioning.

“beginning around 1930 the until 1930 virtually no one studied fat tissue it wasn't it was a there were in all these sort of burgeoning fields of physiology and endocrinology nobody really cared the assumption was it was inert it was for padding and cushioning and if you starve people somehow the fat tissue would shrink”