So there are three ways to feel that you are really lactose intolerant, one of them is that at some point the consumption of dairy has been excessive and that is that you may have low amounts of the enzyme which is in charge of digesting milk sugar (or how lactose is the same)
Another way and that is usually A temporary way is that your body is developing an intestinal problem, at most they are usually problems that are generated temporarily, but it is clear that they affect the time of digestion of lactose, and that generate swelling, pain in head and great discomfort.
Normally, although it does not always occur due to irreversible problems that stop producing the lactase enzyme, this occurs in adulthood and is that the body is able to stop producing this enzyme when it ages, and it is that by lowering our milk consumption, our The production of this enzyme, which is what divides the sugar in milk.