This will seriously mess up your DNA. Also, many enzymes are composed of two or more molecules associated with each other, so this will screw them up badly. Including the pores in your neurons' synapses. Oh, and although your bones are suddenly a lot denser and thicker they wouldn't change shape, so your brain is now 50% larger in a skull cavity that is a bit *smaller* than it was before. I think you'd basically just die instantly (and messily).