Hi Brett!
Congrats on yet another success
Thanks for explaining the question marks. I was wondering!
Cortisol correlates with the Yang Ming, which essentially governs metabolism including mitochondrial activity. If an animal eats too much, cortisol increases post-prandially, as does mitochondrial activity, creating a digestive 'heat' that, if repeated, begins to dominate clinical appearance and be known as Damp Heat.
For horses, Damp Heat is aggravated by the richness of the fodder. Grain concentrates, high bioavailability (e.g., fresh grass in spring) and lots of alfalfa hay are Dampening influences as the produce that over nutrition state and the associated heat signs. Fiber is the main defense against Damp in horses. As long as they have to work for their food, they are less prone to Damp
Hopefully that answers your questions!
Steve