Boreiko, C J.; Abernethy, D J.; and Frazelle, J H., Detection of carcinogens which initiate the process of c3h/10t1/2 cell transformation. Abstr. (1982). Subject Strain Bibliography 1982. 2148. https://mouseion.jax.org/ssbb1982/2148
Hi Sue, The ringing in the ears is called Tinnitus. It can be a side effect of medications (check what you are taking) or for me, it can also be a sign that a migraine is on the way. It could also mean a number of many other things, depending on other symptoms you may have.
What Foods Cause Your Ears to Ring? Certain foods can worsen ringing in the ear. An estimated 50 million Americans suffer from a chronic or recurrent ringing, roaring, whistling, hissing, clanging or shrieking sound in their ears, according to How Stuff Works.