Re: Nut diet cycles > CR?/ phytic acid in nuts

November 9, 2005

Hello, on a closely related topic I found this paper on bio

availabilty of some nutrients when on a vegetarian diet, which is also

a nice follow up to the earlier discussion on phytates. I suppose that

this does not mean that such diets are less desirable. But it would

seem that to improve nutrient absorption when on a vegetarian diet one

would need to deal with the phytate issue effectively by neutralizing

PA content of food through such processes as (lacto-)fermentation and

soaking as alluded to in earlier posts.

" Nonheme iron absorption is inhibited by phytic acid

(6-phosphoinositol), found in whole grains, legumes, lentils, and

nuts; polyphenols, such as tannic and chlorogenic acids, found in tea,

coffee, red wines, and a variety of cereals, vegetables, and spices;

soy protein (apparently independent of the phytic acid in soy); and eggs "

http://www.ajcn.org/cgi/content/full/78/3/633S

>

> Hi All,

>

> Might the below not yet in Medline not pdf-available paper suggest

that going

> through cycles of eating and not eating nuts result in net CR?

>

> ¡°Does regular walnut consumption lead to weight gain?¡± Maybe,

yes, but, ¡°The

> weight gain from incorporating walnuts into the diet ... was less

than the weight

> loss from withdrawing walnuts from the diet¡±?

>

> Does regular walnut consumption lead to weight gain?

> Sabate, Joan; Cordero-MacIntyre, Zaida; Siapco, ; Torabian,

Setareh; Haddad,

> Ella

> British Journal of Nutrition, Volume 94, Number 5, November 2005,

pp. 859-864

>

> Abstract:

>

> Studies consistently show the beneficial effects of eating nuts, but

as high-energy

> foods, their regular consumption may lead to weight gain. We tested

if daily

> consumption of walnuts (approximately 12% energy intake) for 6

months would modify

> body weight and body composition in free-living subjects. Ninety

participants in a

> 12-month randomized cross-over trial were instructed to eat an

allotted amount of

> walnuts (28¨C56g) during the walnut-supplemented diet and not to eat

them during the

> control diet, with no further instruction. Subjects were unaware

that body weight

> was the main outcome. Dietary compliance was about 95% and mean

daily walnut

> consumption was 35 g during the walnut-supplemented diet. The

walnut-supplemented

> diet resulted in greater daily energy intake (557 kJ (133 kcal)),

which should

> theoretically have led to a weight gain of 3¡¤1 kg over the 6-month

period. For all

> participants, walnut supplementation increased weight (0¡¤4 (se

0¡¤1) kg), BMI (0¡¤2

> (se 0¡¤1) kg/m2), fat mass (0¡¤2 (se 0¡¤1) kg) and lean mass (0¡¤2

(se 0¡¤1) kg).

> But, after adjusting for energy differences between the control and

> walnut-supplemented diets, no significant differences were observed

in body weight

> or body composition parameters, except for BMI (0¡¤1 (se 0¡¤1)

kg/m2). The weight

> gain from incorporating walnuts into the diet (control¡ú ¨C>walnut

sequence) was

> less than the weight loss from withdrawing walnuts from the diet

(walnut¡ú

> ¨C>control sequence). Our findings show that regular walnut intake

resulted in

> weight gain much lower than expected and which became

non-significant after

> controlling for differences in energy intake.

>

> Al Pater, PhD; email: old542000@y...

>

> __________________________________

> - PC Magazine Editors' Choice 2005

> http://mail.

>

November 9, 2005