Can you eat grass-fed beef tallow (that is kidney fat, aka suet, rendered) or clarified butter?

I know two people who gained weight using that fat in a well planned food protocol.

Protein amounts are likely the most discussed topic.

I go by Dr. Jan Kwasniewski's recommendations. There are many other approaches.

Protein amount is calculated from height in centimeters.

If you are 180 cm. tall. That 180 minus 100 is your "due body weight". That 80 is the reference number for calculating protein, fat, and carbs (PFC).

Protein would be 80 grams per day, plus or minus ten percent. That gives a range of ca. 72 - 88 grams of Pro per day.

If you are lowering your carbs, it is common to eat more protein at first, until your body adapts.

The two people I know who were able to gain weight, eating real food, followed the upper end of the fat recommendations.

Taking 80 g/PRO as reference "1", the fat is
2.5 - 3.5 times the Protein amount.

One person ate close to four times the fat amount at the beginning.

Carbs are .5 - .8 of Protein.

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This might look like:

80g/PRO: 240g/FAT (more or less, as wished): and 40 - 48g/CHO (carbohydrate). That uses fat grams at three times the protein grams.

One adjusts everything for individual health needs, and a bit for preferences.

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I use a "ballpark" method for calculating my PFC:

one ounce of meat/fish or an egg = 6 - 7 grams of PRO

one ounce of cooked green vegs = 1 g./CHO

one tablespoon of butter/tallow = 12g/FAT

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Some look up each food and calculate PFC very exactly.


If you can take HCl acid and digestive enzymes, it might help get more of the nutrients out of the food and into the tissues.

L-Carnitine is good for helping nutrients get to the muscles.

CoQ10 helps the mitochondria.

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That's just one approach. Others here may post different ones.

I wish you success and good health.