A human pineal gland is the size of a grain of rice.
It’s an asset to space travel.
That’s why birds are so resistant to pineal calcification.
Equatorial animals eventually lose their pineal glands.
Polar animals grow their pineal glands.
Three things help preserve the human pineal gland …
1) jumping on a trampoline
2) increasing cold weather tolerance
3) shifting the emphasis on orgasm from phallic to cephalic anatomy
Gerald J. Little & M. M. Bryden (“The Pineal Gland in Newborn Southern Elephant Seals, Mirounga leonina,” Journal of Pineal Research, Volume 9, Issue 2, September 1990) wrote …
“In the newborn southern elephant seal the pineal gland is very large, and both pineal and plasma melatonin concentration is elevated. The pineal gland was investigated during the first 24 h, and up to 20 days of age, in elephant seal pups. A primary aim of this investigation was to determine whether there are obvious ultrastructural characteristics of pinealocytes that are exhibiting extraordinarily high levels of activity. Blood and pineal glands were collected from thirty seven pups of known age which were sampled at random from early September to early November (1985) at Macquarie Island. The pineal gland is large (mean weight, 4.71 ± 0.35 gm, range 1–9.3 gm) and actively secreting melatonin at birth. Melatonin concentrations were extremely variable, yet very high in pups during the first 24 h post-partum. Mean melatonin plasma concentration for pups 0–24 h was 17632.8 ± 5723.8 pmol/l (4090.8 ± 1327.9 pg/ml), ranging from 126 pmol/l (29 pg/ml) to 297000 pmol/l (68904 pg/ml). Electron microscopic examination did not reveal any marked changes in pinealocyte ultrastructure suggestive of increased secretory activity during this period. The large and extremely active pineal gland in newborn southern elephant seal suggests that it is actively involved in thermoregulation.”
It’s been known for at least a hundred years that pineal secretion inhibits precocious sexual development. (See the Journal of the Kansas Medical Society, Volume 17, 1917; Endocrinology and Metabolism, 1922; Structure and Function of the Epiphysis Cerebri, 1963; etc.)
In other words, the pineal gland and its melatonin are anti-gonadal.
(More about the pineal gland and its calcification on Sun Sync Nutrition)