Osteoporosis, or porous bone, is
a disease characterized by low bone mass and structural deterioration of bone
tissue, leading to fragile and brittle bones that are prone to fracture,
especially at the hip, spine and wrist, although any bone can be affected.
It is important to understand
that bone is not a hard and lifeless structure; it is, in fact, complex, living
tissue. Our bones provide strength for
muscles, protect vital organs, and store the calcium essential for bone density
and strength.
Think of your bones as a savings
account. There is only so much in your
account as you deposit. The critical
years for building bone mass are from prior to adolescence to about age
30. Some experts believe that young
women can increase their bone mass by as much as 20 percent—a critical factor
in protecting against osteoporosis.
Because bones are constantly
changing, they can heal and may be affected by diet and exercise. Until the age of about 30, you build and
store bone efficiently. Then, as part of
the aging process, your bones began to break down faster than new bone can be
formed.
Health Risks
Osteoporosis is a major public
health threat for an estimated 44 million Americans or 55 percent of the people
50 years of age and older. In the US, 10
million individuals are estimated to already have the disease and almost 34
million more are estimated to have low bone mass, placing them at increased
risk for osteoporosis.
Of the 10 million Americans with
osteoporosis, 80% are women. Risk is for
people of all ethnic backgrounds. While
osteoporosis is often thought of as an older person’s disease, it can strike at
any age.
One in two women and one in four
men over age 50 will have an osteoporosis-related fracture in her/his
lifetime. Osteoporosis is responsible
for more than 1.5 million fractures annually, mostly in the spine, then hip,
wrist, and other sites.
The estimated national direct
care expenditure, including hospitals, nursing homes and outpatient services,
for osteoporotic fractures is $18 billion per year (in 2002) and rising.
The most typical sites of
fractures related to osteoporosis are the hip, spine, wrist, and ribs. The rate of hip fractures is 2-3 times higher
in women than men; however, the one year mortality rate following a hip
fracture is nearly twice as high for men.
A woman’s risk of hip fracture is equal to her combined risk of breast,
uterine and ovarian cancer.
In 2001 about 315,000 Americans
over 45 were admitted to hospitals with hip fractures. An average of 24% of patients over age 50
will die in the year following the fracture and one in five will require
long-term care afterward. Six months
after hip fracture only 15% can walk across a room unaided. One in five hip fracture patients ends up in
a nursing home.
Screening
Specialized
tests called bone mineral density (BMD) tests can measure bone density in
various sites of the body. A BMD test
can detect osteoporosis before a fracture occurs, help predict chances of
future fracture and determine rate of bone loss and/or monitor the effects of
treatment.
Another useful test
is the urine N-telopeptide or urine NTX.
A simple urine sample can measure the amount of bone collagen lost in
the urine, giving an indication of how much bone turnover is happening and how
much bone is being lost. A low score is
good. I use this test to help further
stratify risk with the BMD test as well as monitor ongoing therapy.
Risk Factors
Osteoporosis is
often called a “silent disease” because bone loss occurs without symptoms. People may not know that they have
osteoporosis until their bones become so weak that a sudden strain, bump or
fall causes a fracture or a vertebra to collapse. Collapsed vertebra may initially be felt or
seen in the form of severe back pain, loss of height, or spinal deformities
such as kyphosis or stooped posture.
Risk factors for osteoporosis
are many and include a personal history of fracture after age 50 or current low
bone mass, history of fracture in first degree relative or family history of
osteoporosis, being female, being thin and/or having a small frame, advanced
age, estrogen deficiency as a result of menopause, low testosterone, anorexia
nervosa, low calcium intake, vitamin D or K deficiency, inactive lifestyle,
certain medications (steroids, chemo, seizure drugs, etc), certain chronic
medical conditions, cigarette smoking and excessive alcohol intake.
Prevention and Treatment
Think of bone
as being much like a concrete wall. The concrete
is strong, but brittle, and the metal rebar that runs through the concrete is
what gives the wall tensile strength, or the ability to resist tension. Bone is much the same and the calcium is
similar to the concrete, while flexible collagen is laid out in a grid
throughout the bone. The collagen,
called the bone matrix, provides the tensile strength.
There is a
sequence of activity needed to make strong bone. First, hormones such as estrogen,
testosterone, thyroid and growth hormone act to “turn on” bone
development. Vitamin D is needed to
absorb calcium from the gut while Vitamin K allows calcium to be deposited in
the bone matrix and keep it from building up in artery walls. Of course proper nutrition provides the
calcium, and other vitamins and minerals necessary to build strong bone.
Calcium is in
the news lately, with questions about increased heart disease in folks taking
supplemental calcium, particularly a large amount. At this point the ongoing studies are
suggesting we not supplement calcium if we are getting enough in our diet, and
then not to supplement more than about 500mg daily. There will be conflicting guidelines on this
so stay tuned.
Hormone
replacement therapy is the mainstay of treatment for my patients. Strong muscle equal strong bones, so weight
bearing and strength building exercises are key. Good nutrition is essential, along with
targeted supplements including calcium, vitamin D3 and K2, and minerals such as
boron and magnesium. As an example, one
of my favorites is Bone Restore from life extension. I also use a milk protein isolate called
“enriched lactoferrin” and a mineral called “strontium citrate”, both of which
promote bone formation.
I don’t
routinely find any need for the prescription drugs such as Boniva or Fosamax
which build bone density by inhibiting the cells that cause bone
breakdown. There are common side
effects, serious risks, and questions of efficacy. Frankly, by implementing the previously
mentioned treatments osteoporosis is becoming a rare thing in my practice.
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Bio
Scott Rollins, MD, is Board Certified with the American
Board of Family Practice and the American Board of Anti-Aging and Regenerative
Medicine. He specializes in Bioidentical Hormone Replacement, thyroid and
adrenal disorders, fibromyalgia and other complex medical conditions. He is founder and medical director of the
Integrative Medicine Center of Western Colorado (www.imcwc.com). Call (970) 245-6911 for an appointment or
more information.
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