PhytoEstrogen's in Everything!

Many different plants produce compounds that may mimic or interact with estrogen hormones in animals. At least 20 compounds have been identified in at least 300 plants from more than 16 different plant families (1). Referred to as phytoestrogens, these compounds are weaker than natural estrogens and reside in herbs and seasonings (garlic, parsley), grains (soybeans, wheat, rice), vegetables (beans, carrots, potatoes), fruits (date, pomegranates, cherries, apples) and drink (coffee).
Most of us are exposed to many of these natural compounds through food (fruits, vegetables, meat). The two most studied groups of phytoestrogens are the lignans (products of intestinal microbial breakdown of compounds found in whole grains, fibers, flax seeds and many fruits and vegetables) and the isoflavones (found in soybeans and other legumes. Does this mean that all those foods have the potential to increase Estrogen. I read that flax increases estrogen in many articles.