Aging
The passage of time is inevitable and
eternal. Aging begins as early as from young adulthood (around age 20 to 40) to
middle adulthood (around age 40 to 65), and continues to old age (beginning at
the age of retirement, approximately at age 65). Aging occurs throughout most
of one’s lifespan. The aging process is an accumulation of changes, which may
be subtle or sudden, and even drastic, that progressively lead to disease,
degeneration, and ultimately death. Truly, you cannot die merely of old age;
your ultimate demise is caused by advancing age itself, as well as by the
diseases and degenerative conditions that accompany it.
Aging is difficult to define, but you
will know it when you see it, or experience it firsthand yourself. In brief,
aging is a steady decline in health and wellness, instrumental in shortening
lifespan; and the aging process is the duration during which such changes
occur.
Whether you like it or not, your
biological clock is ticking, and this will happen to various systems in your
body:
Your heart will pump less blood, and your
arteries will become stiffer and less flexible, resulting in high blood
pressure—a common health problem that often increases with age.
With less oxygen and nutrients from the
heart, your lungs will also become less efficient in getting and distributing
oxygen to different organs and membranes of your body.
Your brain size will slowly and gradually
reduce by approximately 10 percent between the age of 30 and 70. Loss of
short-term memory will become increasingly more acute and evident.
Your bone mass will reduce, making it
more brittle and fragile. Your body size will shrink as you lose your muscle
mass.
Your biological clock is continuously
ticking, whether you are conscious of it or not. Your mortality has been
pre-programmed into your biological organisms and your body cells.
Theoretically, you may have an indefinite lifespan through the division, the
rejuvenation, and the regeneration of your body cells and organisms—if they are
still healthy and fully functional. Although your genes may have pre-determined
the speed of your biological clock, you can still slow down the speed of aging—if
you still have good health.
So, what is good health? Is being healthy
synonymous with the absence of disease?
According to the United States Public
Health Service, good health is “preventing premature death, and preventing
disability, preserving a physical environment that supports human life,
cultivating family and community support, enhancing each individual’s inherent
abilities to respond and to act, and assuring that all Americans achieve and
maintain a maximum level of functioning.” This statement probably sums up what
you need to do in order to be younger and healthier for longer; it says everything
about aging.
Premature
aging
The truth of the matter is that you age,
just like everyone else does. The point in question is how you can delay that
aging process in order to make you not only feel but also look younger and
healthier for longer—or, at least, not making you age more quickly than you are
supposed to.
Unfortunately, many of us have fallen
victims to the accelerated aging syndrome, or premature aging.
Accelerated
aging syndrome
According to Steven Masley, M.D., the
former medical director of the Pritikin
Longevity Center
in St. Petersburg , Florida , you may have the potentials for
accelerated aging, if you have just any three of the following:
A fast blood sugar level of more than 100
mg/dl
A blood pressure higher than 130/85
A waist larger than 35 inches for women
and 40 inches for men
Good cholesterol level (HDL) less than 40
mg/dl for men, and 50 mg/dl for women
Triglyceride (a certain type of fat in
your blood) levels greater than 150 mg/dl
Factors contributing to premature aging
Your diet: you are what you eat, and you
become what you eat.
Your lifestyle: life on the fast lane
often leads to faster aging.
Your physical inactivity: immobility
brings about stagnation and degeneration.
Your stress level: stress kills your
brain cells, predisposing you to premature aging.
Your disease and physical pain: disease
and pain have a devastating impact on both the body and the mind.
Damaging free radicals
Your body is composed of many different
types of cells, made up of many different types of molecules.
Free radicals are molecules that contain unpaired
electrons. Since electrons have a very strong tendency to co-exist in a paired
rather than in an unpaired state, free radicals indiscriminately pick up
electrons from other healthy molecules close by. This chemical reaction
converts those otherwise “healthy” molecules into free radicals, and thus
setting up a chain reaction that can cause substantial biological damage to
cells. Free radicals are highly reactive, damaging not only cells but also
chemicals in your body, such as enzymes (for digestion), making them less
effective and efficient.
Aging causes oxidation, which literally
means “rusting.” Free radicals cause oxidative damage to cells and tissues.
Free radicals do not make you younger and healthier for longer; quite the
contrary, they age you prematurely and contribute to many diseases, including
cancer and heart disease, among others.
Free radicals occur naturally as
byproducts of oxidation, such as during respiration and other chemical
processes. For example, during your breathing, life-giving oxygen is produced
while harmful carbon dioxide is released; digestion is another oxidation
process, in which your body obtains its energy from food through oxidation,
during which free radicals are also generated in the form of waste buildup.
Ironically, what gives life may also take away life indirectly.
Free radicals are normally present in
your body in small numbers, without causing too much harm. However, over the
long haul, the accumulation of these free radicals may cause irreparable damage
to your body cells and tissues, if such accumulation is unchecked.
In addition, free radicals can also be
caused by external factors, such as alcohol, nicotine, chemicals from foods and
toxic pharmaceutical drugs, heavy metals, such as cadmium and lead, from the
environment, radiation from the sun and other sources.
Stephen
Lau
Copyright© by Stephen Lau
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