The milk that many regions of the world consumed was genetically different to the most common milk that humans consume today. It has been proven that a2 milk is digested differently to a1 milk.
I switched to a2 milk and the difference to my digestive system was extremely obvious. Time will show that for many people, if they consume milk, it should be a2 milk.
If anyone else wants a quick summary of what you can find on Google Scholar for this: There is currently no strong evidence in support of the idea that A2 milk has better digestive or other health properties than A1 milk. Most of the stuff I found out there concluded that there was no significant difference, and the few that I found on the rest of the Internet were contradicted elsewhere.
This is correct and does not contradict anything I said. It is quite easy to try it for yourself and see if it does anything. Of course you will want to avoid consuming large amounts of other dairy sources while you are trying it.
In order to build confidence in the results of a personal experiment like this one, it's best to (double-)blind it as much as possible and log lots of concrete data every day (e.g. keep track of your bowel movements, sleep quality, alertness levels, blood pressure, etc). This should help limit the impact of any (conscious or subconscious) preconceptions or other psychosomatic effects.
Also, change as little else in your life as possible while you're performing the experiment to control for confounding variables.
Err not really. The typical vegan diet contains large amounts of potato, heavily refined carbohydrates, and processed foods. It also lacks an emphasis on probiotic and prebiotic foods such as sauerkraut. The article also didn't say the diets were massively different, but rather that they had a different emphasis. You can eat a vegan diet and avoid all of the prebiotic and probiotic foods.
There's no typical vegan diet, just like there's no typical non-vegan diet. Vegans can eat whole foods, junk food, high-carb, low-carb, high-protein, etc. There's no macro or micro nutrient that comes exclusively from animals. (Btw, I've never seen Sauerkraut that wasn't vegan.)
I've been vegan for 10 years, have lived in 3 different countries and have met a lot of vegans, usually in situations where food was involved. My personal experience indicates that, overall, vegans eat less processed/refined foods than non-vegans and are more knowledgeable about nutrition than the average.
My experience is that they eat a lot of potato chips and biscuits. Where do you get your vitamin b12 from?
Regardless, the rest of my comment points out why the person I was replying to is wrong. Even your comment points it out. All you need to do to be a vegan is not eat animal products. This means you can avoid all of the foods that are good for your biome. That was the entire point of the quote from the article that was completely missed by the op.
In addition, not all vegetables are equal with regards to bacteria.
I switched to a2 milk and the difference to my digestive system was extremely obvious. Time will show that for many people, if they consume milk, it should be a2 milk.