Although there is no evidence that PYY can directly influence insulin secretion in humans (53), activation of Y1 receptors is associated with increased intestinal motility and orexigenic effects, while conversely, Y2 receptor activation mediates the enterogastrone and anorectic effects of PYY (54)
None of that is the same as a promised jump in strength, speed, or endurance on demand, and any source implying otherwise is overselling
It is important to appreciate, however, that the increased risk relates to a disorder that is relatively uncommon. He went on to say: Our findings should be viewed as being significant but tentative, as future studies are needed to examine these questions in a much larger and more diverse population
In addition, multiple food intolerances commonly develop as the situation goes untreated
Martin Whyte, an associate professor of metabolic medicine at the University of Surrey, explains one possible theory as to why people tend to regain weight after they stop these medications