Hormonal birth control depletes many nutrients, including folate, other B vitamins including B2, B6 and B12, antioxidant nutrients such as vitamins C & E, and also magnesium, selenium, and zinc. This is part of why hormonal birth control side effects can include anxiety and depression, low libido and fatigue (just to name a few). If you choose to use hormonal birth control, you should be informed on this so you can check in on and support these nutrients intentionally to protect yourself.