We all know that too much alcohol can cause "brewer's droop" in men, and a loss of sensation for both parties.
But quinine, the ingredient which gives tonic water its unique flavor, may also affect libido.
Scientists at the University of Lagos in Nigeria found that quinine was a "testicular toxicant" and lowered the levels of testosterone in rats.
奎宁水
众所周知，饮酒过度会引起男性早泄，让双方感觉麻木。奎宁水的主要成分奎宁虽然使得该饮料口味独特，却也可能影响性欲。尼日利亚拉各斯大学的科学家们发现奎宁"对睾丸有害"，并且会降低老鼠睾丸激素的水平。