Isoflavones are found in small amounts in a number of legumes, grains, and vegetables, but soybeans are by far the most concentrated source of isoflavones in the human diet (104, 105) .
Standing water under a house is usually the result of only two things; either a leaking water line, or from surface water drainage around the house. If it was from a leaking water line, the leak would have to be substantial, and you would hear running water in the house.
Water leaks can also be caused by the following issues: 1  Clogged air filter. 2  Low refrigerant. 3  Cracked condensate drain pan.  No p-trap and air vent in the drain line to prevent water 1  backup. Condensate buildup in un-insulated ductwork.