Maple Syrup Urine Disease (MSUD) is a condition that results from improper metabolism of branched-chain amino acids. The aromatic in fenugreek, sotolon, may be used as a diagnostic criteria for MSUD as it exists in the urine of those persons with this metabolic defect and gives the characteristic sweet-scent.  It normally does not appear in healthy person's urine due to no dietary intake, but may appear in those who drink or consume fenugreek, leading to a false diagnosis.  Maternal consumption of sotolon can also transfer into the baby after birth, and cause trans-generational false diagnosis. 
You hit the bullseye dead center when you advised (re:DHEA) "Do not buy dosages more than 10 mg per pill". I did as you advised and bought the 10mg pills then I stupidly thought I'd increase the benefits I was experiencing by doubling the dosage to 20mg. BIG mistake. My appetite vanished like Rush Limbaugh at a NAACP meeting. Then I could only sleep like 3 hours per night and I started have serious depersonationalization episodes. I ceased taking it and not going to resume your advised dosage until I fully return to normal.
There is also some crosstalk with the H 2 S signalling pathway and the nitric oxide pathway, since H 2 S can degrade the molecule known as S-nitrosoglutathione,  which serves as an intracellular (and to a degree, extracellular  ) reservoir of nitric oxide that garlic is known to stimulate.  Due to this, the influence of garlic on blood pressure and blood flow is in part due to nitric oxide signalling per se (the vasorelaxing effect of opening potassium channels to be discussed in the ion channels section  ) and in part an influence of the hydrogen sulfide system unto the nitric oxide system.