Review / Better than keto and paleo diets? The carnivore diet is 2 weeks of meat and water – but does it really work?

All-you-can-eat animal products, such as meat, fish and eggs ... but will ‘Hubby’, our no-greens guinea pig, cheat on a neighbour’s chocolate chip waffles?
“It’s meat and water. That’s it,” my husband says, looking morosely at his half-finished plate of steak. “I’m not allowed other things.”
We’re on day 1 (meal 2) of the carnivore diet – or more accurately, he is, as I’m not fool enough to take on such an idiotic endeavour for two weeks – and I find myself vaguely concerned about Hubby’s health and sanity
We’re on day 1 (meal 2) of the carnivore diet – or more accurately, he is, because I’m not fool enough to take on such an idiotic endeavour for two weeks – and I already know it’s not going to stick. The primary rule of the diet is that only animal products are allowed (more on that later).
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We have a false start in the morning, as apparently even coffee is off-limits – there’s no such thing as a coffee-producing cow, folks, but we double-check the rules and hit the restart button.
So far he has had a 200-gram (7-ounce) steak for breakfast, a 500-gram steak for lunch post-workout, and presumably more steak for dinner.
He’s going to be averaging 1kg of red meat a day and I find myself vaguely concerned about his health and sanity.
“I can eat as much meat as I like – that’s the beauty of it,” he says proudly. Sure enough, the aptly named carnivore diet – known by some as the zero carb diet – doesn’t seem to restrict the quantity of meat one consumes.
One of my favourite subreddit rules about the carnivore diet is ‘If it has a face, eat it’
I suppose when only animal products are allowed, and fruits, legumes and even leafy veg are banned (unlike the diet’s more forgiving cousins, the keto and paleo diets), one must get one’s jollies however one can.

He accuses me of being smug about his undertaking and I suppose I could be more supportive, but it’s hard not to feel a tiny bit incredulous as I research the diet over a lunch of garlic bread and cream cheese.