Medications altered by grapefruit include highly prescribed cholesterol-lowering statins, some key heart drugs, and certain anti-psychotic and pain medicines. Thatâs because grapefruit contains a chemical that interferes with an enzyme that controls how drugs are absorbed through the intestines, resulting in a potentially toxic dose of medication.
Yttrium is mostly dangerous in the working environment, due to the fact that damps and gasses can be inhaled with air. This can cause lung embolisms, especially during long-term exposure. Yttrium can also cause cancer with humans, as it enlarges the chances of lung cancer when it is inhaled.
Yttrium is a chemical element with symbol Y and atomic number 39. It is a silvery-metallic transition metal chemically similar to the lanthanides and it has often been classified as a  rare earth element .Yttrium is almost always found combined with the lanthanides in rare earth minerals and is never found in nature as a free element.t is a silvery-metallic transition metal chemically similar to the lanthanides and it has often been classified as a  rare earth element . Yttrium is almost always found combined with the lanthanides in rare earth minerals and is never found in nature as a free element.