Organ/Function |
Ageing Symptoms |
Abnormal Growth |
Cancers, hyperplasia, and macromolecular aggregates become common. |
Arteries |
Cholesterol and calcium buildup, walls thicken, arteries harden, high blood pressure, risk of heart attack. |
Bladder (65) |
Connective tissue weaken, lower capacity to store urine, and reduced efficiency of emptying content. |
Blood |
White blood cell and red blood cell count decrease. |
Body Weight |
Weight declines between age 55 and 75, due mostly to loss of lean tissue, muscle mass, water, and bone. |
Bones (35) |
Loss of bone cells accelerates at about age 35, bones become porous and brittle in the demineralizing process. Osteoporosis is common in women. |
Brain (20) |
Gradual loss of brain tissue ( 5-10% by age 90), slow reaction, faltering memory, insomnia. |
Breast (35) |
Mammary (milk secreting) glands reduce in size, as does the breast. |
Ear (55) |
Gradual loss of the ability to hear higher frequencies, starting around age 30; hair grows in auditory canal. |
Eye (40) |
More far-sighted, problem with focusing, difficulty in adjusting to light intensity, perception of hues altered. |
Face |
Wrinkles, facial hair, bags under the eyes, double chin, longer ears, thinning cheek. |
Fat |
Fat content and distribution change, storage increases |
Hair (30) |
Graying, thinning, balding. |
Heart (40) |
Thickening of heart wall, gradual lose of effectiveness as a pumping machine. |
Hormones |
The level of several hormones, e.g., GH, DHEA, IGF§, ... falls with age, may be a major cause on ageing. |
Immunity |
Body's power to combat infection declines; auto-immune responses increase. |
Joints |
Cartilage becomes cracks and frays, cushioning fluid gets thinner, tendons and ligaments are less resilient. |
Kidneys (50) |
Weight & volume of the kidneys shrink, marked reduction in the cleansing of impurities from the blood. |
Liver (70) |
The ageing process does not affect adversely the liver. |
Lungs (20) |
Lose elasticity and capacity (40% between ages 20 and 80), increasing difficulty to oxygenate blood. |
Metabolism (55) |
Ability to metabolize sugar decreases with age, reduction of food intake may prolong life. |
Muscles (30) |
Loss of muscular mass, partly due to un-use, other causes include loss of blood flow and energy supply. |
Nerve |
Demyelination - loss of myelin covering of nerve fibers, which is characteristic of neurological disorders.
|
Nose (60) |
Ability to smell declines after age 65, amount of reduction varies widely between individuals. |
Prostate (50) |
Reduction in semen making after 60, enlargement in size may cause difficulty to urinate. |
Reaction Time |
Mental and physical responses to specific stimuli become slower. |
Reproductive System (35) |
Women go through menopause at ages of 45 - 50, reduced level of estrogen affects the whole body. Men's reproductive change with age is more like a reduction than a cessation. |
Skin (25) |
Wrinkles (related to decreased mitochondrial function), dryness, dark spots. |
Teeth (40) |
Teeth gum recession |
Thermoregulation |
Response to changes in environmental temperature becomes impaired. |
Tongue (60) |
Sense of taste loses only gradually with age, with equal reduction of all flavors. |
Voice (65) |
Voice becomes weak and muffled
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