Canibais e Reis

Foto: Cereais saudáveis de pequeno-almoço.

O Dr. William Davis, médico cardiologista favorito da comunidade low-carb, autor do famoso Heart Scan Blog e de quem eu já havia falado aqui, está com uma excelente série de artigos sobre o efeito dos hidratos de carbono (cereais/amidos modernos e processados, açúcares/frutoses, etc.) nos marcadores de risco cardiovascular. Se os cereais/amidos modernos e processados, como é o caso dos cereais de pequeno-almoço, são tão saudáveis quanto os nutricionistas e lóbies alimentares, que andam sempre de mão dada - sempre esta permanente aliança, não lhe parece estranha? -, nos querem fazer crer, então porque será que representam um factor acrescido de inflamação, potenciador de oxidação, de degradação do perfil lipídico, de desregulação do metabolismo da glucose, de permeabilidade intestinal e doença celíaca, de aumento da pressão arterial, etc.? Mas a dieta mediterrânica não está repleta desses cereais saudáveis por tudo quanto é lado e os especialistas e os estudos "científicos" não dizem que são indispensáveis à vida, apesar de nunca terem sido consumidos por humanos ao longo de toda a sua evolução? Os artigos do Dr. Davis são então os seguintes (sugestão: oiça também as entrevistas mais abaixo):

What to Eat: The diet is defined by small LDL
Slash carbs. What happens?
Carbohydrates and LDL
High HbA1c: You’re getting older … faster
Carbohydrate sins of the past
Rerun: To let low-carb right, you must check POSTPRANDIAL blood sugars
LDL glycation  

DR. WILLIAM DAVIS

Carbohydrate reduction results in:

Reduced small LDL–This effect is profound. Carbohydrates increase small LDL; reduction of carbohydrates reduce small LDL. People are often confused by this because the effect will not be evident in the crude, calculated (Friedewald) LDL that your doctor provides.

Increased HDL–The HDL-increasing effect of carbohydrate reduction may require 1-2 years. In fact, in the first 2 months, HDL will drop, only to be followed by a slow, gradual increase. This is the reason why, in a number of low-carb diet studies, HDL was shown to be reduced.–Had the timeline been longer, HDL would show a significant increase.

Decreased triglycerides–Like reduction of small LDL, the effect is substantial. Triglyceride reductions of several hundred milligrams are not at all uncommon. In people with familial hypertriglyceridemia with triglyceride levels in the thousands of milligrams per deciliter, triglyceride levels will plummet with carbohydrate restriction. (Ironically, conventional treatment for familial hypertriglyceridemia is fat restriction, a practice that can reduce triglycerides modestly in these people, but not anywhere near as effectively as carbohydrate restriction.) Triglyceride reduction is crucial, because triglycerides are required by the process to make small LDL–less triglycerides, less small LDL.

Decreased inflammation–This will be reflected in the crude surface marker, c-reactive protein–Yes, the test that the drug industry has tried to convince you to take statins drugs to reduce. In my view, it is an absurd notion that you need to take a drug like Crestor to reduce risk associated with increased CRP. If you want to reduce CRP to the floor, eliminate wheat and other junk carbohydrates. (You should also add vitamin D, another potent CRP-reducing strategy.)

Reduced blood pressure–Like HDL, blood pressure will respond over an extended period of months to years, not days or weeks. The blood pressure reduction will be proportion to the amount of reduction in your "wheat belly."

Reduced blood sugar–Whether you watch fasting blood sugar, postprandial (after-meal) blood sugars, or HbA1c, you will witness dramatic reductions by eliminating or reducing the foods that generate the high blood sugar responses in the first place. Diabetics, in particular, will see the biggest reductions, despite the fact that the American Diabetes Association persists in advising diabetics to eat all the carbohydrates they want. Reductions in postprandial (after-eating) blood sugars, in particular, will reduce the process of LDL glycation, the modification of LDL particles by glucose that makes them more plaque-causing.

 

Fonte: Heart Scan Blog.

Ligações relacionadas/essenciais:

Heart Scan Blog
Heart Disease (Health Central)
Track Your Plaque

Farto de pequenos-almoços à base de cereais "saudáveis"?
(nota: wheat = trigo)

The Wheat-free Life: Lunch and Dinner
The Wheat-free Life: Breakfast
The Wheat-free FAQ
Whole Grains, Half Truths: Real-life Results of the Wheat-free Diet
Foods Worse than Table Sugar? You Don’t Want to Know 
Cut Carbs, Lose Weight: DIRECT Study Results
Heart Disease Diet: Do You Have a "Wheat Belly"?
Are You a Wheat-aholic?

Entrevista no LC Show, com Jimmy Moore (podcast):

Dr. William Davis: Atkins Nutritionals Presents Best Of 2008 ‘Encore Week’ (Episode 214)
Be Heart Smart With Heart Scan Blogger, Dr. William Davis: Part 1 (Episode 185)
Tim Russert Didn’t Have To Die, Says Dr. William Davis: Part 2 (Episode 186)