Most shark attacks occur less than 100 feet from the shore. More people are killed by bee stings and lightning than by shark attacks. Worldwide about 30 people die each year from shark attacks, which means a person has a one in 300 million chance of being killed by a shark. A shark attack most often occurs when a shark mistakes a person for a seal or other animal.
The new 2010 recommended daily allowance (RDA) is 600 IU for those 1-70 years of age and pregnant or breastfeeding women, and 800 IU for those over 71 years of age. An adequate blood level of vitamin D is 20 nanograms per milliliter, which can be achieved through daily skin exposure to sunlight.
The current recommended intake for vitamin D is 600 International Units (IU) for adults up to age 70 years, and for adults 71 or older the recommendation is 800 IU. Talk to your doctor about your exact vitamin D need, if a supplementation is right for you, the type of supplement and the amount to take daily. There are two forms of supplemental vitamin D: vitamin D2 (generally made from yeast) and vitamin D3 (made from the skins of sheep, cows, pigs and sheepâs wool).