The booming U.S. economy, in which imports tripled from $23 million in 1790 to $78 million in 1807, brought in far more tariffs to pay off the debt. Still, the deficit-cutting plan hit a setback when Jefferson decided in 1803 to add $15 million of debt to the mound he inherited.
Prolonged exposure to loud sounds is the most common cause of tinnitus. Up to 90% of people with tinnitus have some level of noise-induced hearing loss. The noise causes permanent damage to the sound-sensitive cells of the cochlea, a spiral-shaped organ in the inner ear.
Hearing changes. Some chemotherapy drugs for lung cancer cause ringing in the ears (tinnitus). You may also find that you can't hear some high pitched sounds. Some people also feel dizzy and lose their sense of balance. Let your doctor or nurse know if you have any change in your hearing or if you feel dizzy.