I shared this on the egg thread also. Seems fitting here too:
It is from here Food for a Fast | Perfect Health DietAdding some food
So far we haven’t provided any calories to speak of. The next step in reducing the stress of the fast is to add some nutrition to the soup.
The stress of a fast is largely due to the absence of dietary carb and protein. The body has limited carb storage – glycogen is depleted early in a fast – and is loath to cannibalize lean tissue for protein. On the other hand, the body has abundant fat reserves. So
Two strategies may make sense in different circumstances:
- A protein-sparing modified fast. Protein, which is convertible to glucose, is eaten to relieve the carb+protein deficit.
- A ketogenic fast. Short-chain and medium-chain fatty acids, such as are found in coconut oil, are eaten to generate ketones. Ketones can partially substitute for glucose utilization.
What these have in common is that they reduce the carb+protein.
Probably 90% of people who fast should favor the protein-sparing approach. Those on ketogenic diets for neurological disorders should probably favor the ketogenic fasting approach.
An example of a food suitable for a ketogenic fast would be Neo-Agutak: “Eskimo Ice Cream” (Dec 5, 2010).
A suitable food on a protein-sparing modified fast would supply most calories as protein; carb and fat calories would be from nutrient-dense sources. Egg yolks, which are rich in phospholipids like choline, and potatoes are good examples of nutrient-dense fat and carb sources.
The easy way to implement this healthy fast: just add eggs, potatoes, and maybe some fish or shellfish (which tend to be protein-rich, and comply with the Catholic guidelines for Friday abstinence) to any of the soups shown above. Heat the soup in the microwave and there you have it: a healthy fast-day meal!