wow excellent post. a caveman super scientist very cool!

i did a little digging and i found you your natural CYP19 inhibitor
"flavones"
here is a little blurb about them i found at newsrx.com
"Natural flavones more potent CYP19 inhibitors than flavanones
January 16th, 2005
"Natural flavones are potent CYP19 inhibitors."

"Flavonoids and related structures (e.g, flavones, isoflavones, flavanones, catechins) exert various biological effects, including anticarcinogenic, antioxidant and (anti-)estrogenic effects, and modulation of sex hormone homeostasis."
now flavones come in a variety of colours and flavors
Apigenin is a flavone that is isolated from parsley and celery
Luteolin is most often found in leaves, but it is also seen in celery, green pepper, perilla and camomile tea
Tangeritin is found in tangerine and other citrus peels
they also do a lot of other great things for the body, like clean out free radicals, lower cholesterol as well as promote both the metabolism and the immune system
nothing beats Google, its a caveman's best friend lol.
