The rate of decay of 14C is such that half of an amount will convert back to 14N in 5,730 years (plus or minus 40 years). This is the âhalf-life.â So, in two half-lives, or 11,460 years, only one-quarter of that in living organisms at present, then it has a theoretical age of 11,460 years. Anything over about 50,000 years old, should theoretically have no detectable 14C left. That is why radiocarbon dating cannot give millions of years.
Unfortunately, two months have passed since the beginning of what is called sudden sensorineural hearing loss (SSNHL), and it is now too late for you to regain any hearing by means of the most common and effective treatment, steroid therapy.
Age. Age is the biggest single cause of hearing loss. Hearing loss that develops as a result of getting older is often known as age-related hearing loss or presbycusis. Most people begin to lose a small amount of their hearing from around 40 years of age.This hearing loss increases as you get older. By the age of 80, most people have significant hearing problems.As your hearing starts to deteriorate, high-frequency sounds, such as female or childrenâs voices, may become difficult to hear. It may also be harder to hear consonants such as s, f and th.his hearing loss increases as you get older. By the age of 80, most people have significant hearing problems. As your hearing starts to deteriorate, high-frequency sounds, such as female or childrenâs voices, may become difficult to hear. It may also be harder to hear consonants such as s, f and th.