During your period, you can lose up to 50-80ml of blood, and iron is key to replenishing the blood lost. Great sources of iron include red meat, chickpeas, lentils, kidney beans, quinoa, green leafy veg such as kale, and – there is a ‘treat’ that boosts our iron intake – dark chocolate.
Article source: https://www.huffingtonpost.co.uk/entry/the-key-to-an-easy-period-bio-hack-your-cycle_uk_63f39716e4b0a1ee1495408a