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.
Stiffening of the bones in your middle ear (otosclerosis) may affect your hearing and cause tinnitus. This condition, caused by abnormal bone growth, tends to run in families. Other causes of tinnitus. Some causes of tinnitus are less common, including: Meniere's disease. Tinnitus can be an early indicator of Meniere's disease, an inner ear disorder that may be caused by abnormal inner ear fluid pressure.