Newsgroup: it.salute.alimentazione
Titolo: acqua sciogli cibo

 
 
 
Sono a dieta,ma ogni tanto,in compagnia ,mi lascio andare un po e mangio 
un po troppo es:pizza,gelato grande,grappa,... 
 
Se dopo mangiato bevo un litro e mezzo di acqua,puo servire a sciogliere 
il cibo,di modo che non venga assorbito dall'intestino?  
Oppure non serve a nulla? 
 
 
Ciao e grazie 
-- 
questo articolo e` stato inviato via web dal servizio gratuito 
http://www.newsland.it/news
 segnala gli abusi ad 
ab...@newsland.it

   
La seconda che hai detto!
-- 
fulmo

 Ciao e grazie 
anzi , da un punto di vista solo teorico dovrebbe essere peggio.
Un maggior contenuto di acqua , durante i pasti ,dovrebbe facilitare
l'assorbimento del cibo e quindi la sua trasformazione ...
è pura teoria !!
rusca



Semmai BEVI PRIMA dei pasti e abbondante, puo' darti un falso senso di
sazieta' che limitera' il tuo senso di fame.
http://www.idealdieta.it/spiegel/page31.asp

 
http://www.idealdieta.it/spiegel/page31.asp
Una nutrizionista, Barbara Rolls, della Penn State University smentisce 
però smentisce questa credenza... Per raggiungere la sazietà, dice, bere 
acqua prima o durante i pasti serve a poco. Molto meglio scegliere cibi 
ricchi di acqua e con poche calorie, per esempio verdure in quantità, 
come le zucchine, anche da aggiungere in un piatto unico con un po' 
pasta. Quello che conta, dice, è il volume "riempistomaco", e che il 
piatto complessivo abbia un basso rapporto di calorie per volume.
Fin qui il suo discorso mi convince. La Rolls però cita anche le zuppe e 
gli "smoothies" (tipo frullati di frutta), e questo mi convince meno, 
perché la mia impressione è che una zuppa "apre" lo stomaco più che 
saziare (ma forse dipende dalla zuppa), e un frullato sazia meno della 
frutta intera, a parità di calorie... 
http://www.molicof.it/articoli/acqua.htm
Bere molta acqua prima e durante i pasti e' una sana abitudine ma non è 
di alcun aiuto per chi vuole perdere peso. Secondo Barbara Rolls, 
nutrizionista del Penn State College of Health, quello che invece puo' 
aiutare a raggiungere un po' prima la sazieta' sono i cibi ricchi di 
acqua. 
"Non sappiamo il motivo e l'origine dell'idea che bere molta acqua prima 
e durante i pasti contribuisca alla sazieta'; e' una convinzione molto 
diffusa ma che non ha avuto alcun riscontro nelle nostre ricerche", 
dichiara la Rolls. 
I cibi ricchi di acqua come frutta e verdura possono offrire invece un 
valido aiuto per chi ha necessita' di ridurre la quantita' di cibo 
assunta durante i pasti. 
"Il corpo tratta la fame e la sete con meccanismi differenti; dunque, se 
una bevanda disseta, non puo' ridurre anche la fame", aggiunge Barbara 
Rolls. 
"In ogni caso l'acqua e' importantissima per l'organismo: troppo spesso 
si tende a! bere meno di quanto necessario, soprattutto nella terza 
eta'". 
===
http://www.scienceblog.com/community/older/1999/C/199902932.html
From: Penn State 
Reduce calories, stave off hunger with water-rich foods -- not water
University Park, Pa. --- Drinking water before or with your meals is a 
healthy habit, but Penn State research has shown that it won't satisfy 
your hunger or help you eat less to control your weight.
Dr. Barbara Rolls, who holds Penn State's Guthrie Chair in Nutrition, 
says "We're not sure where the idea that drinking water before or during 
a meal can stave off hunger originated but it was very popular in the 
60s, and is still a common belief. Our research shows that, although 
drinking water with meals may not be an effective method for reducing 
calories, eating water-rich foods can lower calorie intake."
Rolls and her research team have shown that eating foods with a high 
water content - pasta dishes with additional vegetables, smoothies, soup, 
fruits and vegetables -- can offer a way to cut back on calories and 
still feel full and satisfied.
The study of the effects of water on food intake is detailed in the 
October issue of the American Journal of Clinical Nutrition in a 
paper, "Water Incorporated Into A Food But Not Served With A Food 
Decreases Energy Intake In Lean Women." The authors are Rolls, Elizabeth 
Bell, doctoral candidate in nutrition, and Michelle Thorwart, project 
associate.
The study was the first to systematically examine the effects of water 
served as a beverage and water incorporated into a food on subsequent 
food intakes. The 24 lean women who participated in the study ate 
breakfast, lunch and dinner one day a week in Penn State's Laboratory for 
the Study of Human Ingestive Behavior for four weeks. They were served a 
first course 17 minutes before lunch that consisted of either a chicken 
rice casserole, the same casserole with a glass of water, or a bowl of 
chicken rice soup. Even though the soup and the casserole-served-with-
water contained exactly the same ingredients in the same amounts, the 
soup was more effective in curbing appetite and reducing the calories the 
women consumed during lunch.
"The body processes hunger and thirst through different mechanisms. 
Clearly, if a beverage is processed by thirst, it will not reduce 
hunger, " Rolls says.
Rolls, a faculty member in Penn State's College of Health and Human 
Development, notes that soup is not the only water-rich food that can 
help decrease calorie intake. She says that previous research by her 
group has shown that by consuming other water-rich foods, too, dieters 
can eat their typical size serving of food, reduce calorie intake and 
still be satisfied. In other words, dieters don't have to limit portion 
size as much if they eat foods that are high in water content.
For example, pasta salad bulked up with zucchini, carrots and other 
veggies, which have a high water content, can provide a portion double 
the size for the same calories as a salad made without the veggies. Chili 
augmented with lots of veggies and beans can expand the serving size of 
that dish while still maintaining a low calorie count. Sprouts, lettuce 
and tomato can round out the satisfaction that a sandwich provides 
without increasing calories.
Rolls explains that her group's research has shown that feeling full 
depends on eating a satisfying amount of food. Tiny portions just don't 
do it no matter how much water you drink on the side. The energy density 
of food, or the ratio of calories to the weight of food, is what matters. 
Foods with a high energy density have lots of calories in a small serving 
and are typically lower in water content. For example, a 100-calorie 
serving of raisins, a high energy density food, contains only one quarter 
cup. A 100-calorie serving of grapes, a low energy density, high - water 
content food, contains one and two thirds cups.
Rolls's new book, "Volumetrics, Feel Full on Fewer Calories," to be 
published in December by Harper Collins, will provide more information on 
the energy density of specific foods. The book will also detail her 
energy density-based eating plan and offer menus, recipes and tips for 
modifying your favorite dishes.
As far as her current study of water is concerned, however, Rolls notes 
that she doesn't want to discourage people from drinking water either 
before, during or after their meals.
"Water is critical and many people, especially the elderly, don't drink 
enough," she says. "However, by following the Volumetrics eating 
plan, "you'll consume more water in the form of water-rich foods such as 
fruits, vegetables and soup. The additional water available from the 
foods is another positive health benefit provided by this eating plan."
EDITORS: Dr. Rolls is at 
(814) 863-8482
 or at 
bj...@psu.edu
 by email.
===
-- 
Enrico C
=======================================
http://www.lillathedog.net/icling/dizionari_inglese.html