Before answering your questions, I want to introduce some background on kidney function in traditional Chinese medicine (TCM) theory. Western medicine and TCM are two kinds of medicine system. In TCM theory, the kidney is vitally important, which is considered as the "foundation of prenatal life". The kidney's main physiological functions include storing essence of the body; dominating growth, development and reproduction; regulating water metabolism and receiving qi (meaning energy). Some factors, for example, excess masturbation (once or twice a week is normal if you don't feel too tired and uncomfortable), can damage the normal kidney function, resulting in pathological situations. For example, kidney yin deficiency symptoms include seminal emission, dizziness, tinnitus, back pain, lassitude, poor spirit, thin body, and so on; kidney yang deficiency symptoms, failure of the penis in erection, or weak erection,listlessness, soreness and weakness in lumbar and knees, aversion to cold, cold limbs, dysuria, or urination at night.
Right now let's go back to your questions. Excess masturbation certainly depletes kidney energy, and it also weakens parasympathetic nervous system.
In the thyroid, there are lots of sex hormone (SH) and sex hormone binding globulin (SHBG), which is related to the normal thyroid function. So hyper or hypo thyroidism can affect the levels of SH and SHBG, and sexual dysfunction. Abnormal SHBG can also result in thyroidism problems.
Many herbs and herb formulas can strengthen parasympathetic nervous system, treat thyroidism problems and increase SHBG level and activity. But I don't recommend that you use them by yourself for the safety and effectiveness reasons. Because we need first decide which type of kidney problem you have and then use the right herb formula, not single herb. In order to meet your interest, I give you some herbs for your try. Ginseng or fleeceflower root for parasympathetic nervous system, kelp for thyroidism problem, morinda root or eucommia bark for SHBG activity.
I hope this is helpful for you.
Feel free contact me.
CMD, PhD, L.Ac