I don’t know what and who to believe when it comes to oxalates 
I’m histamine intolerant and I’ve already given up drinking all teas (herbal, green and black), so maybe I will have to limit my coffee to one cup in the morning?
I will have to dedicate some time for this…keep my diet the same and just vary the cup number in the morning…
As long as you are not eating instant coffee, you should be OK.
The real test is n=1. Keep everything dietary stable and just vary the coffee variables.
Believe me, oxalates have been my enemy since I learned I have histamine intolerance. I have eliminated and eliminated some more 
Some say that coffee is ok, oxalate-wise, but it probably couldn’t hurt to experiment…I drink filter coffee, just in the mornings (I stopped drinking coffee all day long once I quit smoking ;))
I guess they were canceling each other out, caffeine canceling the nicotine.
I have yet to give up coffee or tea. I drink 1-3/4 cups coffee and 1-2 cups green tea daily. If I go carnivore, I’ll likely keep that up. I would be changing too many variables if I also quit that while at the same time going carnivore.
I mean: “I drink 1 and 3/4 cups coffee and 1 or 2 cups green tea daily”. I know it’s 1 and 3/4 cups coffee because I measure it: I take 3/4 cup of cold-brewed coffee and dilute to 1+3/4 cups, which fits into my spill-proof mug. 2 cups fits, but just barely, so I use less to have some space while screwing the cap on.
If I’m fasting, I tend to drink 2 cups green tea. If I’m eating, I only drink 1 or sometimes none. Fasting is so difficult, I need all the help I can get.
Get ready for some bathroom talk.
So when I first went keto, I had constant diarrhea. Pretty much every bowel movement. It wasn’t several months into carnivore that it finally stopped.
Now that I’ve quit carnivore I have the opposite problem. I’ve had several pounds of plant matter lodged in my colon all week. I finally got a lot of it out, but it took several tablespoons of mct oil AND an old 500mg metformin pill I had sitting around. Those are both known to give me total intestinal mayhem oh their own. Their combined power was barely enough to give me an almost normal bowel movement. I still feel packed full of vegetables. I’m going to try a big dose of magnesium on my night off. We’ll see if that gets things moving.
Too much fat on carnivore and keto seemed to cause fat gain. Constipation and energy was a problem on pure carnivore despite how much electrolyte and salt ingested. Fasting insulin was higher than expected on prolonged fasting with carnivore- not sure why even though A1C and regular glucose was low to normal.
Now eating some greens with moderate protein without adding lots of fat, body comp has resolved and energy and digestion are better- so I guess maybe just low carb now- leaning toward Naiman MD? - abandoned Keto Macros and intermittent fasting and eat when hungry now. The only difference is that on keto high fat I didn’t actually feel hunger as much- but I also gained weight. I should note that I am experimenting with WOE to help gut and nerve issues not weight management so weight gain was a surprise.
An adequate salt intake will help prevent constipation. Try to get 10-15 grams of table salt a day—including whatever salt is already present in your food. (A carnivore diet tends to decrease our need for extra salt, because there is a lot of salt already present in flesh meat.)
It is an enzyme that we secrete in our stomachs to help us break down the histamine in food. In some people, particularly women, and middle-aged ones at that, the DAO levels decrease causing what seem to be allergic reactions to food, but are really from eating foods that contain too much histamine, i.e. aged and fermented foods, some fruits and vegetables with naturally occurring histamine, leftovers, meats that aren’t as fresh as they could be.
