Brain tumor research is a relatively modern science that parallels the explosion of molecular biology and modern neuroimaging. While the science is new, Mayo Clinic has a long history of brain cancer treatment and research stretching back over 100 years.
But not all vitamins are water-soluble, and the ones that are lipid-soluble, meaning they like to hang around in your body's fat, don't get flushed out. Instead, if you take too much of a lipid-soluble vitamin over a few weeks to a month, they sit in the liver and can build up to toxic levels, causing problems ranging from weak bones to liver damage, according to Katherine Zeratsky, a registered dietician nutritionist at the Mayo Clinic.
It's always best to get your nutrients from food. But if you don't get enough calcium from your diet, supplements can help fill the gap. If you're already getting enough calcium from food, taking more in pill form won't help your bones and may increase side effects, like kidney stones.For the best absorption, take no more than 500 milligrams at one time.f you're already getting enough calcium from food, taking more in pill form won't help your bones and may increase side effects, like kidney stones. For the best absorption, take no more than 500 milligrams at one time.