Re: Re: Nuts and Weight

[Guest guest]

> That would explain a lot. Doubly interesting would

> be to know which

> kinds of fat from nuts are excreted and which are

> absorbed .... (!)

More from the same article..

Fecal fat loss because of incomplete mastication of

nuts or other factors may result in a loss of

available energy. Earlier work has shown that whole

nuts are inefficiently absorbed (40). Subjects fed

whole peanuts excreted 17% of dietary fat in the

stool; only 4–7% of dietary fat was excreted when the

rats were fed peanut butter (40). On a well-controlled

feeding trial with pecans (19), there was increased

excretion of fat in the stools of subjects while on

the nut diet (25 g/d) compared with the control diet

(6 g/d). This represented 8% and 3%, respectively, of

the dietary fat of the pecan and control diets (41).

Increased stool fat was also noted on a high almond

diet (42), but the increment of percent fat in stools

(4%) was less than on the pecan (41) and peanut (40)

diets. Nevertheless, the losses of fat in stools of

nut eaters combined with the observed food

displacement would largely explain the lack of weight

gain.

40..Levine AS, Silvis SE. Absorption of whole peanuts,

peanut oil, and peanut butter. N Engl J Med

1980;303:917–8.

41...Haddad E, Sabaté J. Effect of pecan consumption

on stool fat. FASEB J 2000;14:A294

42... Zemaitis J, Sabaté J. Effect of almond

consumption on stool weight and stool fat. FASEB J

2001;15:A602

[Guest guest]

Hi All,

To provide references, are the below papers and

abstract (41). The latter appears to have no

follow-up full report.

Sabate J.

Nut consumption and body weight.

Am J Clin Nutr. 2003 Sep;78(3 Suppl):647S-650S.

Review.

PMID: 12936960 http://tinyurl.com/yc28jm

Frequent nut consumption is associated with lower

rates of coronary artery disease (CAD). Also, nut-rich

diets improve the serum lipid profile of participants

in dietary intervention trials. However, nuts are

fatty foods, and in theory their regular consumption

may lead to body weight gain. Because obesity is a

major public health problem and a risk factor for CAD,

clinicians and policy makers ponder several questions.

Will hypercholesterolemic patients advised to consume

nuts gain weight? Is recommending increased nut

consumption to the general population for CAD

prevention sound public health advice? Epidemiologic

studies indicate an inverse association between

frequency of nut consumption and body mass index. In

well-controlled nut-feeding trials, no changes in body

weight were observed. Some studies on free-living

subjects in which no constraints on body weight are

imposed show a nonsignificant tendency to lower weight

while subjects are on the nut diets. In another line

of evidence, preliminary data indicate that subjects

on nut-rich diets excrete more fat in stools. Further

research is needed to study the effects of nut

consumption on energy balance and body weight. In the

meantime, the available cumulative data do not

indicate that free-living people on self-selected

diets including nuts frequently have a higher body

mass index or a tendency to gain weight.

19. Rajaram S, Burke K, Connell B, Myint T, Sabate J.

A monounsaturated fatty acid-rich pecan-enriched diet

favorably alters the serum lipid profile of healthy

men and women.

J Nutr. 2001 Sep;131(9):2275-9.

PMID: 11533266 http://tinyurl.com/y5rdpp

Frequent consumption of nuts is associated with

decreased risk of cardiovascular disease. We

investigated the effect of pecans rich in

monounsaturated fat as an alternative to the Step 1

diet in modifying serum lipids and lipoproteins in men

and women with normal to moderately high serum

cholesterol. In a single-blind, randomized,

controlled, crossover feeding study, we assigned 23

subjects (mean age: 38 y; 9 women, 14 men) to follow

two diets, each for 4 wk: a Step I diet and a

pecan-enriched diet (accomplished by proportionately

reducing all food items in a Step I diet by one fifth

for a 20% isoenergetic replacement with pecans). The

percentage of energy from fat in the two diets was

28.3 and 39.6%, respectively. Both diets improved the

lipid profile; however, the pecan-enriched diet

decreased both serum total and LDL cholesterol by 0.32

mmol/L (6.7 and 10.4%, respectively) and triglyceride

by 0.14 mmol/L (11.1%) beyond the Step I diet, while

increasing HDL cholesterol by 0.06 mmol/L (2.5 mg/dL).

Serum apolipoprotein B and lipoprotein(a) decreased by

11.6 and 11.1%, respectively, and apolipoprotein A1

increased by 2.2% when subjects consumed the pecan

compared with the Step I diet. These differences were

all significant (P < 0.05). A 20% isoenergetic

replacement of a Step I diet with pecans favorably

altered the serum lipid profile beyond the Step I

diet, without increasing body weight. Nuts such as

pecans that are rich in monounsaturated fat may

therefore be recommended as part of prescribed

cholesterol-lowering diet of patients or habitual diet

of healthy individuals.

40. Levine AS, Silvis SE.

Absorption of whole peanuts, peanut oil, and peanut

butter.

N Engl J Med. 1980 Oct 16;303(16):917-8. No abstract

available.

PMID: 6251367

41. Haddad E, Sabaté J. Effect of pecan consumption

on stool fat. FASEB J 2000;14:A294 (abstr).

--- Rodney <perspect1111@...> wrote:

> Hi Jeff:

>

> > " In another line of evidence, preliminary data

> indicate that

> > subjects on nut-rich diets excrete more fat in

> stools. "

>

> That would explain a lot. Doubly interesting would

> be to know which

> kinds of fat from nuts are excreted and which are

> absorbed .... (!)

>

> Rodney.

>

>

> >

> > 2 quotes from...

> >

> > Nut consumption and body weight

> > American Journal of Clinical Nutrition, Vol. 78,

> No.

> > 3, 647S-650S, September 2003

> >

> > " In well-controlled nut-feeding trials, no changes

> in

> > body weight were observed. "

> >

> > And

> >

> > " In another line of evidence, preliminary data

> > indicate that subjects on nut-rich diets excrete

> more

> > fat in stools. "

-- Al Pater, PhD; email: Alpater@...

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