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.
Follow Following Unfollow Pending Disabled. A Stacy Wiegman, PharmD , Pharmacy, answered. Getting too much vitamin D can cause kidney stones. The stones aren't made of vitamin D itself, though. Excess vitamin D can make you absorb too much calcium -- and if you have too much calcium in the urine, it can crystallize into stones. A kidney stone can cause symptoms when the small mass travels from the kidney through a narrow tube called the ureter toward the bladder. The stone can block or irritate the tube, causing intense pain.