A week of fasting is a 7 days of consuming nothing but water, salts and possibly some vitamins.

You don’t have to try for 7 days on the first attempt, though for most people the first two days are the most difficult so riding it out past the third actually gets easier.

The fasting mimicking diet works too. (https://www.cell.com/cell-metabolism/fulltext/S1550-4131(15)...).

I'm ending my 5th day of this cycle today, and this morning my fasting blood glucose was 77. Usually it's around 100.

Was excited to read this, but disappointed tjere was no information on the actual human diet, other tha a few hugh-level sentences.

Do you know of other sources of information?

It's really just 1050 calories the 1st day, and 750 calories on day 2-5. The exact balance of protein / carb / fat doesn't seem critical.

Is how it is spread throughout the day important? Can it be in one meal, any time of day?

Counting calories has always been such magic to me, given all my meals are homemade and I don't made them.