Yes, doing UT consistently, cravings for such things as junk food and alcohol greatly diminish, though I still like a little wine or beer with dinner.
As for why UT improves health, I believe John Armstrong compared its workings in the body to soil being fertilized by leaves falling from the trees. There are many other reasons for its benefits.
Here is an excerpt from a page at urinetherapeutics.com that goes into this in depth:
Ayurveda considers disease to be caused by a shift in the internal metabolic balance, manifested as the five elements of aether, air, fire, water and earth in that individual. To create health involves rebalancing that unique metabolism to attain elemental equilibrium. In scientific terms, one can consider self-urine therapy as an extension of the methods of Jenner and Pasteur, as auto-inoculation or self-vaccination. Certain bodily substances which have been removed from the body, some of which may have been produced as a result of an imbalance, are re-introduced into the body in small amounts and re-absorbed into the blood through either the intestines or the skin. This gives the immune system all the information that it needs and the chance to react appropriately to achieve homeostasis.
Coen van der Kroon, in his book The Golden Fountain, proposes what he calls the transmutation theory for the underlying mechanics of Shivambu Shastra. His proposal is coherent in terms of the visible shift in recent times from reductionism to holism in scientific research. The theory implies that the body is capable, through energy exchange, to short-circuit the system by ingesting its own secreted body fluids to stimulate the transmutational forces within and challenge the body to transform unusable substances into usable ones. Van der Kroon proposes that self-urine therapy could possibly restructure disturbed DNA, especially if one is fasting on urine. The medical doctor and urine therapist Dr Johann Abele puts it as such: ...the question rises as to whether urine could possibly be considered to be a sort of liquid hologram. Once the body is made conscious of urine in an unconventional way, the whole organism evaluates it and subsequently updates its own regulating mechanisms. An important aspect of this theory is the concept of "structured water". Both the body and urine are mainly made up of water, in varying degrees of molecular organisation. The more water molecules are organised, the more efficiently enzymes responsible for digestion, absorption and transmutation can do their job. It has been proven that water molecules in biological systems become more organised through exposure to sunlight and through close contact with crystals. The body is a receptor of sunlight and contains a high amount of solid and liquid crystalline-like substances; indeed, body fluids themselves form fluid crystals. Urine itself is a crystalline-like substance containing a high amount of structured water, and when retaken it promotes a better enzymatic functioning and higher solubility for minerals, thus improving health and increasing energy reserves. Seeing urine as a liquid crystal implies that it contains vibrations completely in tune with the vibrational condition of the body it comes from. Re-ingestion might give the body valuable vibrational information needed for two things: first, for maintaining the existing healthy body resonance, and second, for counteracting disease or stress vibrations and any unhealthy resonance in the body. By way of example, disharmonious sounds can been counteracted by employing the same sounds. The vibratory patterns of the body, both in the bones (solid crystals) and in the tissues and fluids (liquid crystals), play an important role in the process of transmutation. The resonance field of a crystal can make a protein, for example, change its form into one that is more useful for the body or more easily adaptable by it. This can be described as "modern alchemy", and it resonates with the principles of homoeopathy. Homoeopathy refers to a therapeutic method which clinically applies the "law of similars" and uses medically active substances at infinitesimal doses and never at full strength, where the original substance has undergone a dilution process. When the body is given a homoeopathic remedy, it is stimulated into action not because of the physical or chemical nature of the substance but because of the energetic nature that is received through new vibratory information. Isopathy is another valid hypothesis worth considering. Once microbes have evolved in the blood to a pathogenic level, then de-evolving them back to a stage where they are less harmful would facilitate recovery. The primary way to do this is through diet to rebalance the pH in the blood. But in severe cases, the process can be accelerated biologically, as demonstrated by Professor Enderlein's results from his research on the development life cycle of the internal parasite. A rather evolved pathogenic microbe causing disease in the body can be mated with the same type of microbe at an earlier developmental stage to breed a form that is less strong and non-pathogenic. This process is probable since the colloids or somatids are in fact so small that they are unfilterable by the kidneys; therefore, once urine is consumed, one can receive a dose of these pure somatids which biologically proceed to support the immune function and possibly lead to taking the pathogenic microbes in the blood back down to apathogenic states. This is the basis of isopathic remedies; they promote gentle yet effective self-healing through biological means. Allergy treatment illustrates this method quite well. By using the same substance that is causing the allergy and reintroducing it to the body, the immune system is allowed to develop antibodies to the antigen receptors found in the urine to stop the allergic response. - end quote.
Anyway, congrats on your progress so far, keep us posted. I hope you are using it topically as well for your psoriasis.