Newsgroup: it.salute.alimentazione
Titolo: Ancora su low fat e low carb diets nel diabete...

 diets which have an ambiguous record at best.
non solo si afferma che le obiezioni appaiono avere scarse basi
scientifiche, ma si dice che la stessa cosa vale per il consenso alle
tradizionali diete low fat, che, in questo forum molti credono essere
supportate da grandi basi scientifiche, solo perchè sono quelle
consigliate sulle "raccomandazioni ufficiali".
E per ora si parla di riduzione dei carboidrati in positivo solo per i
diabetici, ma il tempo è galantuomo... 
Ciao!
Gianni

 on
it.salute.alimentazione :

A quali "raccomandazioni ufficiali" low fat ti riferisci?
Le Linee guida americane 2005 dicono
"Keep total fat intake between 20 to 35 percent of calories"
35% è "low fat"?
Le stesse percentuali vengono ripetute nei consigli per chi segue una dieta
per il controllo del peso?
Inoltre, il limite superiore (35%) viene presentato soprattutto in funzione
di evitare eccessi di grassi saturi ed eccessi di calorie, più che come
limite assoluto. Insomma, anche tenendo conto di quelle linee guida, non mi
scandalizzerei di un 40% di grassi totali, se il tipo di grassi resta
quello consigliato (no trans, pochi saturi, sì a grassi provenienti
soprattutto da "fish, nuts, and vegetable oils") e non si eccede nelle
calorie totali.
"A high intake of fat (greater than 35 percent of calories) generally
increases saturated fat intake and makes it more difficult to avoid
consuming excess calories." 
In ogni caso, un intake inferiore al 20% viene caldamente sconsigliato.
"A low intake of fats and oils (less than 20 percent of calories) increases
the risk of inadequate intakes of vitamin E and of essential fatty acids
and may contribute to unfavorable changes in high-density lipoprotein (HDL)
blood cholesterol and triglycerides."

 diabetes.
Ora cominci come toccalenuvole?
Ciao
Gianni

 per il controllo del peso?
Ehm, qui ho scritto  un punto interrogativo di troppo!
Naturalmente le Linee guida 2005 sono generali per la popolazione
americana.
A quanto ho capito, l'ADA-American Diabetes Association, raccomanda ai
diabetici di partire dalle raccomandazioni generali ma adattandole in una
dieta individualizzata  con l'aiuto di un dietologo.
Comunque, ci sono anche alcune indicazioni specifiche in "The Diabetes Food
Pyramid".
Per quanto riguarda i grassi, si parla del 30% delle calorie della dieta
come indicazione generale (sempre da personalizzare a seconda dei casi),
tenendo però i grassi saturi entro il 10%. La mia impressione, quindi, è
che non si tratti di raccomandazioni particolarmente "low fat", ma,
piuttosto, selettive sul tipo di grassi. 
http://www.diabetes.org/nutrition-and-recipes/nutrition/fat.jsp
"The Diabetes Food Pyramid: Fat"
"Fat ought to make up about 30% of your calories. The total amount of fat
you eat should be based on the foods you like and your goals for eating
healthy and blood lipid (blood fats) and glucose control.  You need an
individualized eating plan...."
"One of the most important diabetes nutrition guidelines is to hold
saturated fat to less than 10% of calories.  Why?  Because saturated fat
raises blood cholesterol...." 
http://www.diabetes.org/nutrition-and-recipes/nutrition/overview.jsp
People with diabetes have the same nutritional needs as anyone else. Along
with exercise and medications (insulin or oral diabetes pills), nutrition
is important for good diabetes control. By eating well-balanced meals in
the correct amounts, you can keep your blood glucose level as close to
normal (non-diabetes level) as possible.
http://www.diabetes.org/nutrition-and-recipes/nutrition/diabetes-meal-plan.jsp
What is a diabetes meal plan?
A diabetes meal plan is a guide that tells you how much and what kinds of
food you can choose to eat at meals and snack times. A good meal plan
should fit in with our schedule and eating habits. The right meal plan will
help you improve your blood glucose, blood pressure, and cholesterol
numbers and also help keep your weight on track. Whether you need to lose
weight or stay where you are, your meal plan can help.
People with diabetes have to take extra care to make sure that their food
is balanced with insulin and oral medications, and exercise to help manage
their blood glucose levels.
This might sound like a lot of work, but your doctor and/or dietitian can
help you create a meal plan that is best for you. When you make healthy
food choices, you will improve your overall health and you can even prevent
complications such as heart disease, some cancers, and hypertension.
There are many ways to help you follow your diabetes meal plan. Some ways
are following the Food Guide Pyramid, Rating your Plate, Exchanges Lists,
and Carbohydrate Counting. They are all different but hopefully one is
right for you.
What is a healthy diet?
A healthy diet is a way of eating that that reduces risk for complications
such as heart disease and stroke. Healthy eating includes eating a wide
variety of foods including vegetables, whole grains, fruits, non-fat dairy
products, beans, and lean meats, poultry and fish. There is no one perfect
food so including a variety of different foods and watching portion sizes
is key to a healthy diet. Also, make sure your choices from each food group
provide the highest quality nutrients you can find. In other words, pick
foods rich in vitamins, minerals and fiber over those that are processed.
People with diabetes can eat the same foods the family enjoys. Everyone
benefits from healthy eating so the whole family can take part in healthy
eating. It takes some planning but you can fit your favorite foods into
your meal plan and still manage your blood glucose, blood pressure and
cholesterol.
=================

 Ora cominci come toccalenuvole?
Ognuno pensa e parla per sé, naturalmente.
-- 
Enrico C