Metabolic Efficiency [Was -- Something Paradoxical Here]

[Guest guest]

Strangely, metabolic efficiency is nearly 100 percent in

all humans, and uniformly so for all people, for all macro

nutrients (carbo, protein, fat), as Rudolph L. Leibel in

Scientific American, August 1996 issue, has written up and

proven with some of the most precise metabolic testing

ever performed in humans. Here is the old webpage reference

from Scientific American, that unfortunately is no longer valid,

but one super fantastic article:

http://www.sciam.com/interview/0896leibel.html

The Internet Wayback Machine may have it preserved online in

its archives. I have the textual content in a Word document.

The point is that for macro-nutrients (the caloric content),

human caloric extraction efficiency is uniformly very high,

and differences between individuals are in the noise

(within measurement error, except when using highly accurate

instruments).

Other List members can look this up, to see if high quality

reliable contradictory evidence is available to refute

Leibel's observations, or rather my interpretation of them.

-- Warren

==============

On 18 Mar 2004, Francesca wrote:

> ... Everyone's metabolic efficiency is different. Are they

> accounting for this?

[Guest guest]

Hi Warren:

Could you please clarify what you mean when you use the

term 'metabolic efficiency'?

Are you saying that everyone absorbs all the calories they eat? Or

are you saying that of the calories that are absorbed, which may vary

from person to person because of varying effectiveness of their

intestines, individuals are equally efficient in what they then do

with those that are absorbed?

Thanks.

Rodney.

> Strangely, metabolic efficiency is nearly 100 percent in

> all humans, and uniformly so for all people, for all macro

> nutrients (carbo, protein, fat), as Rudolph L. Leibel in

> Scientific American, August 1996 issue, has written up and

> proven ..........