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Would a pound of beef liver a day cause vitamin A toxicity?

Answered on August 19, 2014
Created March 27, 2013 at 5:25 AM

Liver is a nutritional superfood, and I'm actually eating specifically because I want to get more retinol. I'd like to eat a pound a day, but is this too much?

32f5749fa6cf7adbeb0b0b031ba82b46

(41757)

on March 27, 2013
at 11:05 AM

Yeah, the copper is just as, if not more, concerning than the vitamin A.

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5 Answers

2
6d64cd6dc98d6ab763bd03678a317964

(2177)

on March 27, 2013
at 06:20 AM

You can't be serious.

A pound of beef liver contains 23 milligrams of retinol and 45mg of copper. Adverse effects from retinol begin at 6mg daily doses when taken over extended periods. With copper it begins at 10mgs.

Retinol is fatal in high doses. I'd give you 2 weeks before you're shitting your brains out, yellow, and vomiting.

32f5749fa6cf7adbeb0b0b031ba82b46

(41757)

on March 27, 2013
at 11:05 AM

Yeah, the copper is just as, if not more, concerning than the vitamin A.

1
Medium avatar

on March 27, 2013
at 06:16 AM

Depends. If you have a high vitamin D level and are currently deficient in vitamin A, then you could do that for a short while and it would be beneficial. Assuming no cooking losses and complete absorption, you'd be looking at about 76,000IUs per day. You'd also be pretty much guaranteeing copper sufficiency, which is a hurdle for a lot of people.

If you are only just beginning vitamin D supplementation and have no signs of vitamin A insufficiency, you'd be better off with a pound a week.

If you eat an ounce of hard cheese a day, you'd cover K2 and if you ate a handful or two of raw sunflower seeds, you'd cover vitamin E. All 4 appear to interact and increasing one seems to exacerbate existing insufficiencies of the others.

0
F20af1e0c77eff221d556e3db0fc5684

on March 27, 2013
at 11:22 PM

The warnings you're getting are good, but at the same time, vitamin A doesn't invariably become toxic above a certain level. The "lowest observed adverse effect" is thought to be 21,600iu, and that's a dose for which problems may be seen "rarely"/"for some sensitive subgroups".

Still, I would tread carefully, and also consider that liver is high in cysteine, which you might want to balance out with gelatin.

0
2006ccb2b60f9cc5ba5e8eff8a7abc46

on March 27, 2013
at 11:06 PM

go buy your taste, i ate up to a pound of raw liver for months, and then suddenly it was not what i wanted to eat, id give it a rest for a few weeks and start to eat it again when ever it tasted delicious again.

0
64433a05384cd9717c1aa6bf7e98b661

(15236)

on March 27, 2013
at 05:46 AM

In a word, yes. If you were hunting you would never have access to so much liver without eating a ton of muscle meat too.

Besides that, make sure you're getting enough vit D and K if you're taking in a lot of A.

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