On Sat, 23 Dec 2000 17:06:04 -0500, R Bartlett <[log in to unmask]>
wrote:

><<"Mice fed a high-fat diet for seven months, less than half their life
>span,
>loss dramatic amounts of minerals from their bones, a team at the
University
>of California Los Angeles reported.">>
>
>...
>If fat was increased, what was decreased: protein or carbs or both?  If
>protein was decreased, excess insulin might be expected from the
>*relatively* higher levels of carbs.  In this case, are the researchers
>measuring bone loss from fat or bone loss from hyperinsulinemia?

You incriminate insulin for bone loss?
I think the main aspect of bone loss relates to the acid/basic balance of
the diet as bone-calcium is used to buffer acid loads in the diet.
The goal should be to reduce acid producing food.
Acid reducing agencies are in short: fruit and vegetables.

Diets high in fat have the tendency to be low in fruit and vegetables,
for the following reason:
Assume that both protein and calories must be kept within a certain relation
E.g. from 40 to 120g protein for 2400 kcal for humans - (Philip more).

If you try a high fat diet - fat is pure calories without protein.
To stay within the relation you need protein concentrates(low in calories).
Protein concentrates are meat, cheese, nuts and to a lesser degree seeds.
Such concentrates have a high PRAL/acidity.
Few space for the vegetables to creep in.

If you have a high vegetable/fruit diet, however
you have enough basic load to allow for some acid producing food.
Like the meat/fat or cheese/fat combination or more seeds/nuts.

d'accordo?

Cheers, Amadeus.