16. Natural supplements
Certain natural supplements have been linked to increased fertility, especially in animal studies. Always check with your doctor before taking of natural supplements as efficacy in humans has not been well studied.
Examples include:
- Maca: Maca comes from a plant grown in central Peru. Some animal studies found it improved fertility, but results from human studies are mixed. Some report improvements to sperm qualityTrusted Source, while others find no effectTrusted Source.