Ray Audette wrote on 7/26:

>Gary Ditta wrote:
>>
>> There's a nice study by Phinney et al (80) Metabolism 32(8):757-7680 "The
>> Human Metabolic Response to Chronic Ketosis Without Caloric Restriction:
>> Physical and Biochemical Adaptation" showing that a ketogenic diet
>> *elevates* total cholesterol while leaving HDL unchanged. The study
>> involved 9 lean men who were switched from a calorically adequate high carb
>> diet containing 1.75 g/kg bodywt P, 67% C, 33% F to a calorically
>> comparable ketogenic diet containing <20g/d C, identical P, and 83-85% F.
>> Over a four week period, average cholesterol rose from 159 to 208. HDL was
>> unchanged at 40.

>Most ketogenic diets (including the John Hopkins version) use large
>amounts of vegetable oils to obtain their fat ratios.  These are known to
>raise cholesterol.

The primary fat sources in the Phinney study (from 1983, not 1980) were
mayonnaise, heavy cream, sour cream, and cream cheese. Except for the
mayonnaise, which could have been made with a vegetable oil though not
necessarily, the remainder were presumably from dairy fat.

You can get into trouble with too much vegetable oil, that's true,
especially if it's mistreated. Any chance you could point me in the
direction of references documenting the link between elevated cholesterol
and high vegetable oil consumption?

Gary