Chemical conditions that promote inflammation tend to promote infection. Infection tends to cause inflammation.
You likely cannot neatly separate these two health issues.
Seems pretty clear to me that the connection thus runs both ways. It isn't a one way street.
My understanding:
Life was not able to leave the oceans until there were bony fish not simply because of the need for a frame on land, but also because of the need to regulate the blood chemistry. In the ocean, animals don't need this. The minerals in the water regulate their blood chemistry. Out of the water, bones serve as a store of calcium to draw upon to neutralize excess acidity.
If you are seriously and chronically acid, the body will strip the bones of calcium to keep you alive as long as possible, leading to osteoporosis. Blood needs to remain in a very narrow pH range or you quickly die. Diabetics diagnosed with acidosis are hospitalized. It is a medical emergency that can kill you in two or three days.
Most Westerners dismiss the idea of an alkaline diet as nonsense. It gets lumped in with "nutcase" anti-vaxxers for how "scientific" it is deemed to be. But the first defense against acidosis is diet. You need to not be eating too much of the wrong thing.
Correcting it is tricky because if the stomach gets too alkaline, you become incapable of digesting food and you begin throwing up. So brute force methods of consuming strongly alkaline stuff can go bad places. You really need to straighten out your diet as a first line of defense. Trying to "hack" this doesn't work well.
You can google it, though you will probably get a lot of hits that the HN crowd would outright mock. Here are a couple of "respectable" links to get you started:
https://www.livestrong.com/article/381592-normal-body-ph-ran...
Acidosis is medical emergency. Human body contains several pH buffers, is someone would be able to saturate them by eating, they would die.
There is absolutely no connection between alkaline foods and blood pH levels. Eating acidic or alkaline foods has no effect on stomach pH, nor does it has effect on the pH of blood.
Alkaline food can alter urine pH, but there is no effect on elsewhere in the body unless you are really sick.
I can't recall where it read it, but I think it's the result of some phagocytic, either auto- (i.e. lysosomes, intracellular clean up) or macro- (i.e. macrophages, a type of white blood cell used from extracellular clean up).
Seems like there isn't a clear enough syntactical delineation between beneficial (exercise-linked) and harmful (disease/infection-linked) inflammation.
There seems to be bacteria in the gut and diabetes link or inflammation and diabetes link. Gum disease is known to have effects trough letting bacteria and byproducts into the blood. Antiviral medication (HIV and herpes medication) may fight Alzheimer for the same reasons (they kill viruses and reduce inflammation indirectly).
Infections (bacterial, viral or prion) and/or inflammation they cause may be the common link.
It could be that anything that increases inflammation has link to Alzheimer's.
Exercise, sleep, stress reduction and good nutrition may be linked to infections or inflammation as well. Link may be trough improving immune system to fight infections and/or reducing inflammation.