see also : [[flavonoids]]<br>
Chrysin is a natural, biologically active flavonoid compound extracted from many plants (Passiflora incarnate, commonly called [[passion flowerpassionflower]]), [[honey ]] and [[propolis]].
==Special Precautions of Chrysin==
*A 1986 study on plant flavenoids and thyroid function done by J. Koerhle that appeared in "Progress in Clinical and Biological Research" found that chrysin can inhibit thyroid function. Chrysin inhibits an enzyme called deiodinase which is involved in thyroid hormone metabolism. An underactive thyroid can lead to increased weight gain, heart disease, joint pain and infertility, according to the Mayo Clinic.