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By David Blyweiss, M.D., Advanced Natural Medicine
The heart healthy habits I normally recommend involve getting
more exercise as well as trading in fatty, sugary foods for fresh fruits and
vegetables. But there's one sweet, decadent food you may have heard about that
boasts high levels of the antioxidants that help keep your heart strong.
What is this secret health food? It's chocolate—specifically
dark chocolate.
According to a brand new study, cocoa powder and
dark chocolate have strong antioxidant power.
They have even more power than most of the so-called super fruits such
as pomegranate and blueberries!1
Chocolate is also packed with polyphenols.
Polyphenols are substances that reduce those harmful free radicals that
damage cells and DNA. They also
prevent fat-like substances in the blood stream from clogging the arteries.
Plus, the polyphenols in chocolate appear to pump up good cholesterol levels.2
But chocolate's benefits aren't just limited to
its antioxidant power. It also acts like a
natural ACE inhibitor.
Researchers have
found that eating dark chocolate inhibits an enzyme called ACE. ACE constricts blood vessels and raises blood
pressure. High levels of ACE activity have also been
linked to hardening of the arteries.
In a study of 16 volunteers,
researchers discovered that the activity of ACE was reduced by about 18%
for 3 hours after eating the chocolate. That's about the same amount heart
patients experience when they take a prescription ACE inhibitor to lower their
blood pressure.3
The
protective substances in chocolate also appear to keep blood platelets from
clumping together in blood vessels. They also prevent swelling in the vessel
walls. This helps prevent the clogged arteries that can lead to blood clots and
heart attack.
Semisweet
and dark chocolate offer the highest amount of cocoa solids. They also offer the
lowest percentage of sugar and fat.
For the
most benefit and the best taste, look for chocolate that contains 70% cocoa.
But before you go on a chocolate binge, please note that
you can get all of these heart-healthy benefits with just small amounts of the
sweet treat.
That translates
to about two tablespoons—or a few squares—of dark chocolate daily.
The
finest dark chocolates are so flavorful even a nibble can satisfy. More than that can pack on the pounds. You
see, chocolate isn't exactly low in calories. But if you eat a balanced diet and exercise,
getting your chocolate fix can be good medicine.
References:
- Crozier SJ. Cacao seeds are a
"Super Fruit": A comparative analysis of various fruit powders and products. Chemistry
Central. Published online: doi:10.1186/1752-153X-5-5.
- Mellor DD. High-cocoa polyphenol-rich
chocolate improves HDL cholesterol
in Type 2 diabetes patients. Diabetic Medicine. 2010;27:1318-1321.
- Persson I. Effects of Cocoa
Extract and Dark Chocolate on Angiotensin-Converting Enzyme and Nitric Oxide in
Human Endothelial Cells and Healthy Volunteers. Journal of Cardiovascular
Pharmacology. 2010 Oct 14. [Epub ahead of print]
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