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Surveys show that 40 to 70 percent of those 65 years old and older suffer from chronic sleep disturbances. [2] The elderly tend to go to bed early in the evening and wake earlier in the morning than younger adults. Furthermore, the elderly often wake several times throughout the night and have difficulty falling asleep.
Another obvious sign of aging is changes in hair color or texture. As we get older, hair becomes thinner and falls out faster, says Friedman. Gray or white hair occurs from a loss of melanin, the ...
There is some confusion over how the focusing mechanism of the eye works. [clarification needed] In the 1977 book, Eye and Brain, [13] for example, the lens is said to be suspended by a membrane, the 'zonula', which holds it under tension. The tension is released, by contraction of the ciliary muscle, to allow the lens to become more round, for ...
It most commonly occurs in people over the age of fifty and in the United States is the most common cause of vision loss in this age group. [1] [3] About 0.4% of people between 50 and 60 have the disease, while it occurs in 0.7% of people 60 to 70, 2.3% of those 70 to 80, and nearly 12% of people over 80 years old. [3]
In the United States, age-related lens changes have been reported in 42% between the ages of 52 and 64, [70] 60% between the ages 65 and 74, [71] and 91% between the ages of 75 and 85. [70] Cataracts affect nearly 22 million Americans age 40 and older.
More melanin means darker eyes, hair or skin. The color of the melanin in the eyes is determined by three other genes, EYCL1, 2 and 3. Together, they account for brown, green and blue, but not ...
People with lighter eyes also consume significantly more alcohol, as darker eyed people require less alcohol to become intoxicated. The reason boils down to genes.
Older adults with visual impairment are at an increased risk of physical inactivity, [29] [30] slower gait speeds, [31] [32] [33] and fear of falls. [ 34 ] Physical activity is a useful predictor of overall well-being, and routine physical activity reduces the risk of developing chronic diseases and disability.