https://www.zerohedge.com/political/curse-ultra-pasteurization

Old-fashioned, “low-temperature” pasteurization takes milk to 150 F—hot enough to destroy most of the enzymes in milk, many of which protect against pathogens, while others attach to vitamins and minerals in order to make them easy to absorb. High-temperature pasteurization (also called flash pasteurization) takes milk to 161 F, hot enough to kill all the enzymes and denature some of the proteins.

Ultrapasteurization takes milk to 284 F—hotter, much hotter, than the boiling point—by rushing this most fragile, delicate food past superheated stainless steel plates. The process kills bacterial endospores—tough, dormant structures produced by many pathogens, which allows them to “hibernate” and come back to life when conditions are sufficiently favorable (such as the small intestine). The process also kills everything else, including nutrients, enzymes, and proteins.

UHT milk comes packaged in aseptic, sterile containers—it needs no refrigeration and has a shelf life of six to nine months—a boon to retailers. The process was developed in Europe—I remember seeing stacks of these aseptic containers in supermarkets in France when I lived there in the early 1980s and wondering why anyone would buy milk that didn’t spoil.

In the early 1990s, the Italian company Parmalat introduced its UHT milk to the United States. American consumers resisted purchasing unrefrigerated milk, so the industry packaged it in traditional containers and sold it from the refrigerator aisle.

According to Parmalat’s website, “UHT milk is the same as fresh milk but simply uses a different pasteurization process. It contains a lot of nutrients that are good for your body, just like fresh milk.” It adds, “With our special pasteurization process, our milk doesn’t need to be stored in the fridge until opened. This means you can store as many bottles as you want and never run out of milk.”

A 2019 study from China titled “Processing milk causes the formation of protein oxidation products which impair spatial learning and memory in rats,” indicates that UHT milk is not like fresh milk at all. The researchers subjected milk to four processing techniques: boiling, microwave heating, spray drying, and freeze-drying. (Boiling takes milk to 212 F—ultra-pasteurization is much hotter.)

All four techniques (even freeze-drying) caused “various degrees of redox state imbalance and oxidative damage in plasma, liver, and brain tissues.” Feeding damaged milk proteins to rats resulted in learning and memory impairment—why would any parent want to give UHT milk to their kids?