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.
BALDER THE BEAUTIFUL was the most noble and pious of the gods in Asgard. The whitest flower upon earth is called Balder's brow, because the countenance of the god was snow-white and shining. Like fine gold was his hair, and his eyes were radiant and blue. He was well loved by all the gods, save evil Loke, who cunningly devised his death.