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From Dr. Mirkin's
answers:
Helps for those resistant to insulin - http://www.drmirkin.com/diabetes/D222.html
Dear Dr. Mirkin: Is it better to eat one or two large meals or many
small ones?
Several studies show that nibblers are thinner than
gorgers. Animals that nibble throughout the day have lower cholesterol
levels and less body fat than those that eat all their calories in one
meal. You can shorten your life by drinking a cup of coffee for
breakfast, having a small snack at lunchtime and then eating a huge meal
in the evening. One study showed that men who skipped meals were
far more likely to be fat than those who ate regular meals. Adult
diabetics who eat small meals frequently had lower blood sugar levels
and produced less insulin throughout the day.
Your body temperature rises for about an hour after you eat. Eating
frequently raises your body temperature for longer periods of time,
causing you to burn more calories and store less as fat. Frequent small
meals can also help diabetics to lose weight and control their blood
sugar levels. The more a diabetic
eats at a meal, the higher the blood sugar rises, causing sugar to stick
to cells and be converted to a poison called sorbitol that causes nerve
damage. Eating smaller amounts of food can prevent this by preventing
blood sugar levels from rising too high.
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Dr. Mirkin's E-Zine
August 10, 2003
How Exercise Affects Blood Sugar Levels
Regular exercise may help to prevent heart attacks by
lowering insulin levels. When you eat, blood sugar levels rise and
the higher they rise, the more insulin is released by your pancreas. You
need insulin to keep blood sugar levels from rising too high, but it
constricts arteries to cause heart attacks. Exercise uses up
muscle sugar called glycogen so that when you eat, blood sugar goes into
empty muscles. This keeps blood sugar levels from rising too high
and bringing out extra insulin. High blood levels of insulin lower
the good HDL cholesterol and raise triglycerides, but do not affect the
bad LDL cholesterol levels. Exercise does the opposite by lowering
insulin levels and does not lower blood bad LDL cholesterol levels.
Even if you are not diabetic or otherwise concerned with high blood
sugar levels, you can benefit from a regular exercise program that
lowers blood insulin levels. An ideal program includes alternating
an upper body exercise such as swimming and a lower one such as jogging.
Alternating muscle groups allows your muscles to feel fresh each day and
helps to prevent injuries.
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Dear Dr. Mirkin: Should I be concerned
about a low blood iron level?
Low blood iron levels can be beneficial as long as you
are not anemic. Donating blood lowers blood iron levels and also
helps to prevent heart attacks. Before the bad LDL cholesterol can
form plaques in arteries, it must be converted to oxidized LDL
cholesterol, and iron causes this reaction. Lack of iron reduces
your chances of forming plaques in arteries to cause heart attacks and
strokes.
Routine blood tests measure the size of your red blood cells. If
they are small, your doctor will order a test called ferritin to measure
iron reserves. If your ferritin is low, your doctor will look for
a source of bleeding from menstruation or through the intestinal tract.
If no serious source is found, you need no treatment unless you are a
highly competitive athlete.
Less than 50 percent of the iron in your body is in your red blood
cells. Most is in your iron reserves in your liver, spleen and other
tissues. Your body needs iron to make red blood cells and if your body
does not contain enough iron, you will become anemic, but you will not
become anemic until you have depleted all your iron reserves. You can be
iron deficient but not anemic, when you have an adequate supply of red
blood cells, but no iron reserves. Iron deficiency does not make you
tired unless you are also anemic, but it can tire athletes exercising at
their maximum.
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Dear Dr. Mirkin: How can you tell if a mole is cancerous?
Most moles on your skin will never harm you, but some can turn into a
cancer called melanoma that can spread through your body.
Moles are a type of fleshy dark spot in your skin. The moles that are
likely to turn cancerous have irregular borders and multiple colors, but even with these signs, only a small proportion will
become cancerous. Studies have shown that people who have many moles and
at least one atypical mole are the ones most likely to have cancers. For
example, those with 100 or more benign moles were 26 times more likely to have an atypical moles.
Other factors that increase a person's chances of having melanoma are
freckling, presumably because it is a sign that some areas of skin are
not protected from the sun by pigment; and difficulty tanning, because
these people do not build up protection against sun damage. A
surprising finding is that
pregnancy appears to protect against a person having atypical moles.
If you have moles with irregular borders and multiple colors, check with
your doctor who will probably remove them with a simple office surgery.
Listen to The Dr. Gabe
Mirkin Show on your computer.
LIVE from 4-7PM Eastern time Monday-Friday,
Replays 1-4PM Saturday and Sunday
54 hours of ARCHIVED shows - listen anytime!
www.drmirkin.com
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If you're in the DC area, you'll find information on my
medical practice at:
www.drmirkin.com/about/practice.html
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Call in to the radio show with your questions: 1-800-986-4754
5-7PM Eastern time Monday-Friday.
Submit questions for the e-zine to info@drmirkin.com
This e-Zine is provided as a
service at no charge. Dr. Mirkin's
reports and opinions are for information only, and are not
intended to diagnose or prescribe. For your specific diagnosis
and treatment, consult your doctor or health care provider.
September 6, 2003
- Used with
Permission -
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