PITUITARY

I AM A PINKISH, pea-size nubbin of tissue. I hang, like a cherry, on a tiny stem from the underside of Joe’s brain. I weigh only about 1/50 of an…

THYROID

I AM THAT PINKISH, butterfly-shaped gland that straddles Joe’s windpipe just below his Adam’s apple. I tip the scales at about two thirds of an ounce. My daily hormone production…

THYMUS

UNTIL RECENTLY I’ve been regarded as a kind of poor relation in Joe’s family of glands. Like his appendix, I was looked on as an evolutionary leftover—useless, nonproductive, a source…

ADRENAL

GRAM FOR GRAM, I pack more dynamite than any other organ in Joe’s body. I can cripple him, sicken him, send him to the madhouse, kill him. I haven’t done…