Re: Low-Fat, High-Fiber / Metabolic Syndrome
From: doe (ironjustice_at_aol.comdoe)
Date: 12/20/04
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Date: 20 Dec 2004 17:32:40 GMT
>Subject: Re: Low-Fat, High-Fiber / Metabolic Syndrome
>From: "Mirek Fídler" cxl@volny.cz
>Date: 12/20/2004 4:09 AM Mountain Standard Time
>Message-id: <32npvmF3nhba4U1@individual.net>
>TG levels would drop much more on high-fat diet,
Seems .. science .. disagrees ..
<<snip>>
triglyceride levels jumped from 140 milligrams per deciliter of
blood (mg/dL) after the high-fat meal, but only 10 mg/dL after the low-fat
meal.
<<snip>>
Blood Flow to Heart Hampered After High-Fat Meal
Mon Apr 1, 5:54 PM ET
NEW YORK (Reuters Health) - While a lifetime of fatty meals can lead to a heart
attack, a study released Monday suggests that chowing down on just one high-fat
meal can interfere with blood flow to the heart in healthy young men.
In the study, 15 healthy men in their 20s or early 30s consumed a shake
containing a whopping 1,200 calories and 100 grams of fat--roughly the
equivalent of eating a fast-food meal plus dessert. All of the men underwent a
heart test and had blood samples taken before and after consuming the liquid
meal.
The researchers, led by Dr. Takeshi Hozuml of Osaka City University in Japan,
found that 5 hours after the high-fat meal, the ability of heart arteries to
expand and increase blood flow to the muscle--a measure known as coronary flow
reserve--dropped by 18%.
In addition, five men underwent the same tests after consuming a low-fat 1,200
calorie meal that contained only 10 grams of fat. In that case, the men did not
have a drop in coronary flow reserve after consuming the meal, according to the
report in the April issue of the Annals of Internal Medicine.
The findings suggest that coronary microcirculation--the tiny blood vessels
that provide oxygen-rich blood to heart muscle--can be impaired by a high-fat
meal. Although the study did not include people with heart disease, the results
could explain why those with heart disease-related chest pain, known as angina
(news - web sites), can have increased pain after a high-fat meal. The pain of
angina is thought to be due to a reduction in blood flow to the heart.
The heart, the body's blood pumping organ, requires its own blood supply to
function properly. Coronary arteries are the main blood vessels that supply the
blood to the heart, and if a blockage occurs the surrounding vessels compensate
by expanding in size to keep the proper amount of blood flowing to the heart.
Doctors have know that a high-fat meals, which increase the amount of fatty
substances in the blood such as triglycerides, can over time lead to artery
clogging and eventually heart attacks. In the new study, the investigators
found that triglyceride levels jumped from 140 milligrams per deciliter of
blood (mg/dL) after the high-fat meal, but only 10 mg/dL after the low-fat
meal.
While the researchers were not able to determine if the increase in
triglyceride levels was responsible for the decrease in the heart's blood flow
reserve, the authors say the findings suggest implications for patients with
heart disease.
SOURCE: Annals of Internal Medicine 2002;136:523-528.
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