The medical definition of legal deafness is 66 to 85 decibels of hearing loss. On the scale of hearing loss degrees, this is considered severe. Anything over 85 decibels of hearing loss is considered profound. According to the U.S. Centers for Disease Control and Prevention, only those whose hearing impairment impedes their ability to comprehend speech and language are considered to have some level of deafness.
Most men stop growing taller at about age 16, according to KidsHealth.org. Even if they do not grow taller after that age, their muscles usually continue to develop.
The National Heart, Lung, and Blood Institute shows normal ranges for the most common values detected on a blood test, including red blood cell count, white blood cells, platelets, hemoglobin, hematocrit and mean corpuscular volume. The NHLBI also gives normal ranges for blood glucose levels and lipoproteins such as cholesterol. Abnormal results can indicate disease as well as issues with diet, menstrual cycle, physical activity levels, alcohol intake and medicines.
Respiration is important because it produces energy that is essential for the normal functioning of the body. Respiration provides cells with oxygen and expels toxic carbon dioxide. The BBC notes that cells need energy for movement, multiplication, the synthesis of essential molecules and maintaining body temperature.
The highest fever ever recorded was 115.7 degrees Fahrenheit. This fever was reported in the Lawrence Journal-World, in July of 1980. A 51-year-old man named Willie Jones suffered heat stroke on July 10, 1980, when the temperature outside was 90 degrees Fahrenheit. He received treatment and survived the fever.
Stage four of non-REM sleep is the deepest stage of sleep, according to Psych Central. Stage four is also called delta sleep because of the deep, slow delta waves of the brain during this part of the sleep cycle, which lasts about 30 minutes.
According to Sciences 360, hormones affect many facets of human behavior, including emotions, health, sexual attraction and even weight. Sciences 360 defines hormones as chemicals created by a cell or organ that communicate to another cell or organ to help to regulate normal body functions such as sleeping and eating.
For college-age individuals, reaction times to light stimuli have been published as 190 milliseconds, or 0.19 seconds, and to auditory stimuli as 160 milliseconds, or 0.16 seconds. Human reaction times vary according to the type of stimuli, the method of measurement and the particular study's results.
If a sound level of 85 decibels is endured for eight hours, permanent damage can result. At 100 decibels, permanent damage can result after as little as 15 minutes. Above 120 decibels, the damage can be both permanent and immediate.
A low body temperature indicates either exposure to cold weather or a decrease in the body's metabolic rate. It can also indicate both. Left unchecked, it may progress to hypothermia, a potentially life-threatening condition. According to Dictionary.com, hypothermia is an abnormal decrease in body temperature.
According to the Cleveland Clinic, the skin of an average adult weighs about 6 pounds. Skin covers about 22 square feet of space and renews itself about every 27 days. It is the body's largest organ and plays a critical role in protecting the body from infections and the elements.
High blood sugar, or hyperglycemia, is identified by blood glucose levels that are greater than 200 milligrams per deciliter, according to Mayo Clinic. Common signs of high blood sugar include increased urination, blurred vision, increased thirst, fatigue and headache. In extreme cases, high blood sugar can cause coma and death.
According to TransWeb, people typically develop serious and possibly irreversible brain damage after 5 to 10 minutes of not breathing. Brain cells begin to die after 1 minute without oxygen. Serious brain damage is likely within 3 minutes without breathing.
According to WebMD, the human body makes around 2 to 4 pints of saliva a day. A person also swallows that amount of saliva per day.
According to WebMD, the first symptom of a blood clot inside the calf, also known as a deep vein thrombosis, varies from person to person. Common symptoms include calf pain, weakness, swelling or the appearance of bulging surface veins. Deep vein thrombosis can also be present without any symptoms. This is dangerous, because the blood clot can break free and travel to block more critical blood vessels.
According to Mayo Clinic, the point at which a fever becomes dangerous depends upon age and other accompanying symptoms. It is generally advised to seek treatment if the fever rises above 102 degrees Fahrenheit in adults and children over 3 months old.
In women, normal progesterone levels from the first to the 14th day of the menstrual cycle are less than 1 nanogram per milliliter, according to WebMD. From the 15 until the 28th day of the menstrual cycle, normal progesterone levels are around 2 to 25 nanograms per milliliter. In men, normal values are less than 1 nanogram per milliliter.
According to WebMD, vitamin D deficiency is traditionally known to cause rickets, but a myriad of other health conditions have also been associated with low levels of vitamin D in the blood, including bone and muscle pain and weakness, cardiovascular disease, asthma and cancer. Vitamin D, commonly referred to as the sunshine vitamin, helps the body use calcium and is essential for strong bones and immunity.
Normal resting heart rate for adults is between 60 and 100 beats per minute, according to the Mayo Clinic. Resting heart rate varies considerably by age, but after 16, teenagers have the same normal range as adults.
A normal oxygen level is 95 to 100 percent oxygen, as measured by pulse oximetry, says the Mayo Clinic. A pulse oximeter is a small device which clips on a finger and measures oxygen saturation in the blood, a measurement which is usually considered to be the equivalent of blood oxygen levels.
The normal pulse rate of an adult ranges from 60 to 100 beats per minute, according to Medical News Today. This rate temporarily increases or decreases depending on a variety of factors, including physical activity, body temperature and emotional state.