Strange things happened in Burnett Park Zoo in Syracuse, N.Y., when sunlight-simulating lights were installed in an effort to stop vandalism. The cougars fell in love all over again and produced their fourth litter, we collected five goose eggs, at least 8 lambs were born, and the deer population increased by 20. Big Lizzie gave birth to a bear cub. The wallaby produced a new mini-kangaroo and the chimpanzee got pregnant. A specialist in neurological sciences, physiology and psychology, Hughes said.
Light is definitely a nutrient.
It is essential to life and the whole endocrine system. Light has a role in triggering hormones. Vitamin D receptors help proper bone development and prevent development of rickets. Vitamin D facilitates the absorption of calcium. Under light not closely approximating the sun, one study found calcium absorption dropped off in the elderly in the indoors in winter.