As doctors warn it can cause a dangerous reaction with a host of common drugs... 1  Researchers warn that grapefruit reacts with many medicines. 2  The fruit can cause devastating side-effects from stomach bleeding to kidney problems. 3  Doctors say the public is ignorant to the dangers and putting themselves needlessly at risk.
According to the definition of the question (based on light reflection and not light emission), a well-polished mirror is the the whitest substance on earth. The main reflection layer is usually made out of silver.
White marble. Itâs a classic stone that has been used for centuries and is the whitest type of natural stone available. It can be used for walls, floors and kitchen countertops. In fact, itâs one of the most popular materials for kitchen countertops in the world. But there are a few things to know about white marble and alternatives to white marble before making a selection.