Hi:
"...is it reasonable to say that 10% is probably normal..."
Forget normal, at your age, if it's actually that low, it's extremely impressive, even amazing.
It has been known for quite some time now that atherosclerosis begins (the process/progression of)
at a very early age, even as early as in the pre-teen/teenage years.
Studies performed in the past have shown fatty streaks (represents the earliest precursor to plaque development and plaque is the pathological hallmark of atherosclerosis) as the beginning of atherosclerosis in the coronary arteries. Soft plaque (more dangerous and unpredictable than hard or calcified plaque) is the early stage of atherosclerosis.
A study in the prestigious NEJM showed just how prevalent this problem is. Researchers performed autopsies on young soldiers who had died in combat from conditions other than CAD.
Almost all the individuals had fatty streaks in the aorta. 50% of individuals under the age of 16 years and 85% of individuals under the age of 40 had them in their coronary arteries. More advanced atheroscleotic blockages were found in 30% of individuals under 20 years and 60% of individuals under 40 years old.
The prevalence of these lesions directly correlated with increasing body weight, blood pressure, and cholesterol levels. Cigarette smokers also had more widespread blockages.
EXTREMELY IMPORTANT NOTE: Now recognized worldwide as the most common cause of a heart attack is vulnerable plaque (VP), a soft and potentially deadly type of plaque.
VP is essentially
hidden (
can't be seen with invasive X-ray angiography, heart catheterization) arterial landmines/time bombs, 0% blockages (though unequivocal atherosclerosis)
with the potential to kill, when rupturing and triggering off a blood clot (thrombus).
There over
four dozen risk factors, markers, indicators for cardiovascular disease, some iffy/questionable, new, novel emerging, with more certainly to come.

Plus, as reported, a risk factor merely increases the probability that one will develop cardiovascular disease, BUT doesn't 100% guarantee that one will develop it,
nor does its absence (or even the absence of ALL known risk factors) 100% guarantee that one won't have a heart attack or brain attack/stroke.
Communicate well with your doctor(s). Best of luck down the road of life.
Take care,
CardioStar*
WebMD member (since 8/99)

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Be well-informed
WebMD
Living with Coronary Artery Disease
A chronic disease with no cure. When you have coronary artery disease, it is important to take care of your......
Recognize the symptoms......
Reduce your risk factors......
Take your medications.....
See your doctor for regular check-ups......
http://www.webmd.com/heart-disease/guide/living-with-heart-disease -
LEARN ABOUT the Heart
WebMD
The Heart: (Human Anatomy) Pictures, Definition, Location in the Body and Heart Problems
http://www.webmd.com/heart/picture-of-the-heart HeartSite
Heart info, cardiac tests info, actual diagnostic images.
http://www.heartsite.com -
Heart-Healthy Foods
Nothing complicated, plain & simple!
Avoid foods high in saturated fat and cholesterol.
Choose skim or low-fat milk, low-fat yogurt and reduced-fat cheeses. Eat more fish and poultry.
Limit servings to five to seven ounces a day.
Trim visible fat. Limit egg yolks.
Substitute two egg whites for one whole egg or use an egg-substitute. Eat more fruits and vegetables, whole grains, breads and cereals.
Use less salt and fat.
Season with herbs and spices rather than with sauces, gravies and butter.
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WebMD
Choosing a Weight-Loss Program
http://www.webmd.com/diet/guide/choosing-weight-loss-program The Diet Channel
http://www.thedietchannel.com -
Quote!Be a
questioning patient.
TALK to your
DOCTOR and
ASK QUESTIONS. Studies show that patients who
ask the most questions, and are most assertive, get the best results. Be vigilant and speak up!"
- Charles Inlander, People's Medical Society
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It's your future......be there.

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