1 Drowning can occur in as little as 20 seconds. 2  Don't put your life at risk trying to save your child. 3  If you must enter the water to perform a rescue, bring a flotation device with you. 4  If your child is unconscious and not breathing, call 911 right away.
This vitamin plays an essential role in vision, particularly night vision, normal bone and tooth development, reproduction, and the health of skin and mucous membranes (the mucus-secreting layer that lines body regions such as the respiratory tract).
The only proven benefit of vitamin D is its role in helping calcium build strong bones. But that's far from the whole story. Vitamin D helps regulate the immune system and the neuromuscular system. Vitamin D also plays major roles in the life cycle of human cells. Vitamin D is so important that your body makes it by itself -- but only after skin exposure to sufficient sunlight. This is a problem for people in northern climates.