Sources of apigenin include parsley, thyme, peppermint, chamomile, horsetail, lemon balm, perilla, vervain, and yarrow.
How a flavonoid in parsley boosts testosterone levels
Apigenin flavonoid benefit
University of Maryland - Celery seed
Stoppani, Jim. "14 natural anabolics: power foods that act like supplements. " Flex. 22.3 (May 2004): 186(5).
Kiefer, Dale. "Natural methods to improve vitality, sexual function, and prostate health. " Life Extension. (Dec 2008): NA