Blueberries actually contain two substances that employment to naturally increase testosterone levels.
Like grapes, blueberries – specifically the skin – contain resveratrol, which works as an Aromatase inhibitor blocking the conversion of testosterone into estrogen.
It stands to reason that if less testosterone is being converted into a different substance, you get the advantage of more active testosterone in your system.
Not to mention that as a man performing on his body, want as little estrogen as possible coursing through your veins.
Calcium-D-glucarate is that the other relevant substance in blueberries.
It acts as an estrogen blocker to assist maintain a testosterone positive hormone profile in your body.
Calcium-D-glucarate is really wont to treat some estrogen-dependent cancers (though the evidence for its effectiveness thus far is inconclusive).
Additionally, blueberries provide vitamin C, which we talked about above for its antioxidant and testosterone boosting benefits as they relate to decreased cortisol levels.
With these testosterone-related benefits, it’s hard to deny blueberries are one of the simplest choices if your goal is to extend levels naturally.