Hi @FrankoBear ,
I’ve given your question about oxalates and metabolic acidosis a lot of thought and done some research, although probably not to the extent you do research.
I read through the article listed by @amwassil. I found it quite interesting and wanted to mention some thoughts and questions I had from the article.
“The consumption of industrialized diets with a low content of fruits and vegetables, together with a high consumption of products of animal origin and cereals, are characterized by having a positive PRAL, …”
The article mentions animal products and cereal having high PRAL. Does this matter if one is only eating animal products and no grains? (Again, low carb or no carb maybe having different physiological needs or responses where PRAL is concerned?)
“The metabolism of the potassium salts found in fruits and vegetables, including citrate and malate, leads to the consumption of hydrogen ions and, consequently, to an alkalizing effect. Considering this, the concentration of potassium in the food reflects the alkalizing capacity of fruits and vegetables, although the potassium content of the food can be affected by the cooking method, being significantly reduced after cooking the food in water.”
Animal foods have a fair bit of potassium in them as well. Wouldn’t the potassium in animal foods also have an alkalizing effect? Also, many of the plants listed in the table showing low PRAL levels are actually considered high oxalate foods.
“The presence of oxalate in the food prevents the metabolization of potassium and the subsequent production of alkalis, contributing to the production of acids due to oxalic acid.”
“Some foods rich in oxalate are beets, spinach, Swiss chard, blackberries, cherries, grapes, raspberries, among others. It is important to consider that the composition of micronutrients will determine a negative PRAL, however the publications suggests not to include them in the diet due to the oxalate content.”
Spinach has the most negative PRAL of the vegetables listed in the table, but as we know, it is also very high in oxalate. Many of the vegetables listed in the table are medium to high oxalate. Does that negate the negative PRAL? Cooking the vegetables in water can remove some of the oxalate but it also leeches out the potassium. Does that also negate the negative PRAL?
Looking at the table provided, the PRAL isn’t as negative for the fruits and vegetables as the animal foods are positive. Considering that many of those plant foods are. medium to high oxalate, would that actually shift them more towards neutral? If so, then neutral plant foods would have no effect on alkalizing the animal foods.
I looked up metabolic acidosis (MA): https://en.m.wikipedia.org/wiki/Metabolic_acidosis
There is acute and chronic MA. They seemed to be caused by health problems, particularly kidney problems. Acute acidosis can be caused by excessive amounts of organic acids. Oxalates? Isn’t that one of the problems that can be caused by reducing oxalate too quickly? If so, the MA is caused by oxalate dumping as a result of removing them from the diet, not carnivore causing the MA. But… over time, can the carnivore diet cause kidney damage, and therefore chronic MA in the long run?
I’m definitely dumping oxalate from changing over to carnivore. I also believe the problems I developed over my two years on keto were a result of eating a lot of oxalate containing foods: “healthy” greens, almonds, peanuts, berries, etc.
I definitely want to see if carnivore will help me get rid of my joint, especially back, pain. I’m willing to have a more acidic diet (if that is really a problem) over the relatively short term and give carnivore a try. Maybe once the dumping is down to a minimum I won’t need carnivore anymore. I’ve seen posts on the Trying Low Oxalate Facebook (TLO) group who mentioned similar problems to me, one of which was becoming more and more intolerant to all kinds of foods. They felt that lowering their oxalate load improved food tolerance. For example, some people who were intolerant to dairy found that after some time, they could once again have dairy in their diet. I wouldn’t mind not having to be so paranoid about dairy, that’s for sure.
I haven’t had a chance to read up on bicarbonate enough to make a post about it. That will be for next time.