Fun fact: My wife ended up with pretty severe malabsorption after her bariatric surgery. Her vitamin A levels went so low that she had almost entirely lost her night vision. For like 6 years now she's been taking upwards of 125,000IU per day and only just recently her vitamin A levels have gotten just barely into the normal range.

So what I'm saying is my wife could actually eat an appreciable amount of polar bear liver and be fine.