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.
The White House (soon to be renamed the Trump House) The Beatlesâ White Album; Ok, ok, enough sarcasm. Natureâs whitest substance might be found on the wings of a beetle. The scales of this common sugarcane pest in Southeast Asia is said to be whiter than most substances found in nature.