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Attention, chocolate lovers: You may not be able to help yourselves. Swiss and British scientists have linked the widespread love of chocolate to a chemical "signature" that may be programmed into our metabolic systems.
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Hearing Test
Results and Values
What do the test results mean?
The loudness of sound is measured in units called decibels (dB). A soft sound, such as normal speech, ranges from 5 to 10 dB. A loud sound, such as a jet plane taking off nearby, is about 180 dB. Loud music, such as rock concerts, can reach 80 to 120 dB. Sounds louder than 85 dB can cause hearing loss.
A person with normal hearing can detect low tones (frequencies of 64 cps, or cycles per second) at 1 to 2 dB and high tones (around 11,500 cps) at 10 dB. Most tones in between these extremes can be heard at less than 10 dB. If a person cannot detect pure tones below 10 dB, some hearing loss may be present.
Conditions that may lead to hearing loss are: