Raisins are a staple-food that can boost your testosterone for multiple reasons. First of all, raisins are anti-inflammatory and full of antioxidants. One of these antioxidants is resveratrol, which has been linked (in two different studies) to both increasing testosterone and decreasing estrogen levels in men. Raisins have a very healthy nutritional profile - 100 grams contain 3 mg of boron, a type of metal that has a testosterone-boosting effect in males (this was proven by two different studies). Raisins make an excellent trail mix with Macadamia nuts and Brazil nuts.