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.
Hyams Beach. A white beach doesn't exactly fit in with the world's most colorful beaches, but Hyams Beach isn't just any white beachâit's renowned for having the whitest sand in the world, according to the Guinness Book of World Records.