CannUtopia Nitric Oxide Reviews: – The body requires testosterone, the primary hormone involved in male sex. It is in responsible of regulating cell production, muscle growth, strength, and sex drive. As men age, their testosterone production decreases. Male testosterone levels decline by 2–4% every year beyond the age of 30 in studies. As a result, men over the age of 30 start to manufacture more of the sex hormone-binding globulin, which reduces the body’s testosterone levels. One will consequently start to encounter changes brought on by low testosterone levels.