Symptoms can be subtle ... testosterone supplementation may improve memory in older men with low testosterone though the effect may be small. However, a 2017 study on testosterone supplementation ...
The finding “argues against the usefulness of testosterone prescriptions for treating low sexual desire among men who have testosterone concentrations within the normal range,” researchers wrote.
Testosterone therapy can significantly improve energy, libido, and overall quality of life for men with low testosterone levels, but concerns about testicular shrinkage often give patients pause.