Note 3: It should be noted that the intake of vitamin D via food would add to synthesis caused by exposure to sunlight.
Depending on the amount of sunlight the risk of adverse effects at an intake at the upper level would increase. It
should also be noted that higher doses of vitamin D might be needed, particular in elderly, to achieve optimal
serum levels of 25(OH)D for purpose of optimal mineralisation of the skeleton. Such treatment should be under
Upper limit was determined by dividing in half the scientific studies showing no adverse reaction - just to be super safe
There are many studies showing the need to restrict Calcium to less than 750 milligrams per day when taking a lot of vitamin D