I took large amounts of a flavonoid rich cacao nibs back in March this year and crashed, giving me muscle symptoms, anxiety, depression, palpitations, and extreme insomnia like when I first quit fin. Recovered for a bit in June then ate a lot of something that was anti-androgenic and now I am still suffering from severe debilitating insomnia and muscle stiffness to this day.
Pure cocoa in the form of cocoa powder or cacao nibs is loaded with anti-androgenic polyphenols including resveratrol, quercetin, and tannins. Some people have reported setbacks from eating dark chocolate here. I think chocolate in moderation should be fine though, especially milk chocolate. Don’t eat a whole bar of high quality 85%+ dark chocolate in one sitting. The dosage makes the poison. YMMV.