By Dorothy J. Cowan
Many men who become naturally deficient in testosterone ponder the relationship between having a vasectomy and testosterone levels if thinking about boosting their testosterone levels with testosterone replacement therapy.The connection between vasectomy and testosterone production may influence their decision as to whether to have a vasectomy or not.
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So, I decided to do some good digging and reading and then if I manage to put things together, to lay that in writing form so that others can benefit as well. Without wasting even a minute more I will start this off by describing what testosterone is and what it does in the human body. Testosterone is a steroid hormone with anabolic and androgenic properties. It is the main hormone, responsible for the increase in lean muscle tissue, increased libido, energy, bone formation, and immune function.Testosterone is secreted in the testes in men and in the ovaries in women. Small amounts are also secreted in the adrenal glands. Testosterone is derived from cholesterol. The levels of testosterone in men range between 350 and 1,000 nanograms per deciliter (ng/dl). Sex Hormone Binding Globulin or SHBG is the one that concerns us the greatest. Why? Because this is the main reason why testosterone might not be available to reach the cell receptor. When testosterone gets attached to SHBG, it is no longer able to perform its anabolic functions.What elevates SHGB: Anorexia nervosa, Hyperthyroidism, Hypogonadism (males), Androgen insensitivity/deficiency, Alcoholic hepatic cirrhosis (males), Primary biliary cirrhosis (females).What suppresses SHGB: Obesity, Hypothyroidism, Hirsutism (females), Acne vulgaris, Polycystic ovarian disease, Acromegaly, Androgen-secreting ovarian tumors Less than 1% of the circulating testosterone is in a free form in males (less that 3% in females). Only when in a free form this hormone can exhibit its properties by connecting to the androgen receptors on the cell walls. Based on a study 14 to 50 per cent of the testosterone is bound to SHBG in males and 37 to 75 in females. It is worth mentioning that SHGB poses very high affinity for binding to testosterone. Therefore, changes in the SHGB levels noticeably influence the level of bioavailable testosterone.Let's discuss for a moment what exactly a testosterone bioavailability is. Other than SHGB there are two more testosterone-binding proteins, also called carriers. One of them is albumin. It is a low-affinity binding protein, thus testosterone bound to it is considered "bioavailable". Albumin binds to testosterone in the range 45 to 85 per cent in men (25 - 65 in women). The third carrier is the cortisol binding globulin, which binds also with low-affinity to less that 1 % of the testosterone in circulation.
The free androgen index (FAI) indicates the amount of bioavailable testosterone. FAI is the sum of the free testosterone and the albumin and cortisol binding globulin. Or it's the total serum testosterone minus the SHGB-bound testosterone.It is now clear why we should focus our attention on the properties of SHGB. The levels of this binding protein increase when there is excess estrogen present. Conversely, SHGB levels drop if the testosterone levels are elevated. Here I should mention the fact that SHGB exhibits higher affinity to testosterone than to estrogen. Now, pay close attention.It's a well-known fact that testosterone is an estrogen precursor - it will convert to estrogen under the influence of the enzyme aromatase. Nothing that we don't know so far. Here is where it gets interesting. Suppose that we have normal testosterone levels and we don't suffer from any of the health ailments, which influence the SHGB levels. That means that SHGB levels are normal, too.
If you're regularly using drugs, and think they're not effecting your sex drive, think twice. Even common aspirin reduces testosterone levels in men.Here are a few of the worst offenders.Antidepressant psychiatric medications, including Elavil, Valium, and Prozac. Antihypertensive and diuretics.Antihistamines including, Dramamine, Antivert, and Benadryl.Opiate analgesics (painkillers) such as Demerol, Oxycontin, and Codeine.And a few more for good measure, including,Propecia, Tagamet, Zantac, Pepcid AC, and Ibuprofen.
The surgery affects neither the subsequent desire for sex by a man nor the frequency at which he can perform it.A question arises if there is a safe way to boost testosterone levels for men who have vasectomies and suspect they are suffering from low testosterone levels without side effects.
When you exercise the right way, your body will reward you by releasing human growth hormone, and testosterone into your blood stream.What is the right way to exercise? Weight training that uses several large muscles at the same time. Think squats, lunges, and bench press.High intensity, short duration exercises such as sprints, jump squats,running stairs, and jump rope.The get this hormonal release you need to surpass the lactate threshold.You'll know when you've arrived when you feel that burn in your legs while churning out the last few rep of your routine.
Here are a few more facts on exercise! Researchers at the University of VA measured male growth hormone levels of cyclers after an all out 30 second sprint.These sprints increased HGH levels by a whopping 530% over baseline.Endurance training, has a different hormonal effect. It leads to increased cortisol and low testosterone levels.Failure To Reduce Male Estrogen Levels.
Those that may choose on their own to take Testosterone Supplements are usually bodybuilders and athletes that want to increase muscle mass and stamina during their workouts and exercises. Others that may find it necessary to take the supplements are those that have less natural testosterone in their bodies caused by medical conditions and have it prescribed to them by a doctor. Whatever the case and cause may be, testosterone should be taken in a certain way and at particular times.
Cycling is the key word when taking any Testosterone Supplements. Simply put, it means that the supplements are taken for a certain length of time and then use is stopped for a predetermined amount of time as to give the body and system a rest. This is done for two very important reasons. The first and most important, is that with continuous use with no breaks in between, the body will become overloaded with testosterone, which can cause serious irreversible damage to the system. Second, after taking the supplements for an extended period of time with a cycle break, the body will essentially become immune to the extra testosterone and no longer produce the initial effects. What that means is bodybuilders will not see any further muscle increase and athletes in general, will not have the same extra strength and stamina they had in the beginning.
