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They are compounds produced in a lab to match the chemical structure of your own natural hormones. Bioidentical hormone therapy is often called “natural hormone therapy” because bio-identical hormones act in the body just like the hormones we produce. Testosterone, progesterone, and two forms of estrogen, estradiol, and estriol may be used either alone in treatment or in combination.
As we age, both men and women develop hormonal imbalance and suffer from declining levels of hormones. Women suffer menopause and men suffer andropause. The result is similar for both sexes,
- Muscular weakness, loss of lean body mass, loss of bone mass, increased cholesterol
- Increased joint pain, muscle stiffness, decreased coordination
- Increased fat in the abdominal/chest area, weight gain
- Decreased body hair, wrinkles, sagging skin
- Mental and physical fatigue, lethargy, lack of motivation, decreased concentration
- Depression, anxiety, memory loss, insomnia
- Decreased libido, sexual performance and satisfaction
- Hot flashes, vaginal dryness, night sweats
Data supports that many of the above-described symptoms can be relieved by hormonal replacement therapy however there is concern for adverse effects. Studies have shown links between non bio-identical hormones and serious adverse health outcomes including blood clots, stroke, and cancer. Researchers have shown that bio-identical hormone replacement therapy used appropriately can improve symptoms and greatly reduce the risk for adverse effects. In particular, testosterone implants or pellets effectively treat symptoms in both men and women. Implants, placed under the skin, consistently release small, physiologic doses of hormones providing optimal therapy with minimal adverse effects.
Pellets, or implants are made up of hormones that are pressed or fused into very small solid cylinders. These pellets are larger than a grain of rice and smaller than a ‘Tic Tac’. In the United States, the majority of pellets are made by compounding pharmacists and delivered in sterile glass vials. There is an ‘FDA approved’ 75 mg testosterone pellet.
Pellets deliver consistent, healthy levels of hormones for 3-4 months in women and 4-5 months in men. They avoid the fluctuations, or difficulties, of hormone levels seen with every other method of delivery. This is important for optimal health and disease prevention. Pellets do not increase the risk of blood clots like conventional or synthetic hormone replacement therapy. In studies, when compared to conventional hormone replacement therapy, pellets have been shown to be superior for relief of menopausal symptoms, maintenance of bone density, restoration of sleep patterns, and improvement in sex drive, libido, sexual response and performance. Testosterone delivered by a pellet implant, has been used to treat migraine and menstrual headaches. It also helps with vaginal dryness, incontinence, urinary urgency, and frequency. In both men and women, testosterone has been shown to increase energy, relieve depression, increase sense of well being, relieve anxiety and improve memory and concentration. Testosterone, delivered by pellet implant, increases lean body mass (muscle strength, bone density) and decreases fat mass. Men and women need adequate levels of testosterone for optimal mental and physical health and for the prevention of chronic illnesses like Alzheimer’s and Parkinson’s disease, which are associated with low testosterone levels.
Even patients who have failed other types of hormone therapy have a very high success rate with pellets. There is no other ‘method of hormone delivery’ that is as convenient for the patient as the implants. Implants have been used in both men and women since the late 1930’s. There is significant data that supports the use of testosterone implants in both men and women.
The insertion of pellets is a simple, relatively painless procedure done under local anesthesia. The pellets are usually inserted in the lower abdominal wall or upper buttocks through a small incision, which is then closed with a skin tape (steri-strip).
Complications from the insertion of pellets include; minor bleeding or bruising, discoloration of the skin, infection, and the possible extrusion of the pellet. Other than slight bruising, or discoloration of the skin, these complications are rare. Testosterone may cause a slight increase in facial hair in some women. Testosterone stimulates the bone marrow and increases the production of red blood cells. A low testosterone level in older men is a cause of anemia. Testosterone, delivered by implants or other methods, can cause an elevation in the red blood cells. If the hemoglobin and hematocrit (blood count) get too high, a unit of blood may be donated.
After the insertion of the implants, vigorous physical activity is avoided for 48 hours in women and up to 5 to 7 days in men. Early physical activity is a cause of ‘extrusion’, which is a pellet working it’s way out. Antibiotics may be prescribed if a patient is diabetic or has had a joint replaced. However, this is a ‘clean procedure’ and antibiotics may not be needed.
You may wonder why you haven’t heard of pellets. Pellets are not patented and have not been marketed in the United States. They are frequently used in Europe and Australia where pharmaceutical companies produce pellets. Most of the research on pellets is out of Europe and Australia. Pellets were frequently used in the United States from about 1940 through the late 70’s when oral patented estrogens were marketed to the public. In fact, some of the most exciting data on hormone implants in breast cancer patients is out of the United States. Even in United States, there are clinics that specialize in the use of pellet implants for hormone therapy.
Testosterone levels begin to decline in men beginning in their early 30’s. Most men maintain adequate levels of testosterone into their mid 40’s to mid 50’s, some into their late 70’s to early 80’s. Men should be tested when they begin to show signs of testosterone deficiency. Even men in their 30’s can be testosterone deficient and show signs of bone loss, fatigue, depression, erectile dysfunction, difficulty sleeping, and mental decline. Most men need to be tested around 50 years of age. It is never too late to benefit from hormone therapy.
He or she is wrong. There is a big difference between ‘no data’ and not having read the data. It is much easier for busy practitioners to dismiss the patient, than it is to question their beliefs and do the research. It’s about a patient making an informed choice. After testosterone pellets are inserted, patients may notice that they have more energy, sleep better, and feel happier. Muscle mass and bone density will increase while fatty tissue decreases. Patients may notice increased strength, co-ordination, and physical performance. They may see an improvement in skin tone and hair texture. Concentration and memory may improve as will overall physical and sexual health. There is also data to support the ‘long term’ safety of testosterone delivered by pellet implants.
Testosterone, delivered by pellet implantation, has been shown to decrease breast proliferation and lower the risk of breast cancer, even in patients on conventional hormone replacement therapy. Clinical studies show that testosterone balances estrogen and is breast protective. In the past, testosterone implants have been used to treat patients with advanced breast cancer. In 1940, it was theorized that treating patients with testosterone implants earlier, at the time of diagnosis, would have an even greater benefit, preventing recurrent disease. Androgens have also been shown to enhance the effect of Tamoxifen® therapy in breast cancer patients. In contrast to testosterone, Estradiol, whether delivered by pellet implant, applied topically to the skin or taken orally has been shown to increase the risk of breast cancer (Million Women’s Study). This is not surprising, as continuous Estradiol, a strong estrogen, has been shown to stimulate breast tissue.
Bio-identical progesterone (including FDA approved Prometrium®) has not been shown to increase the risk of breast cancer like the synthetic progestins. In addition, progesterone, used vaginally, does not negate the beneficial effects of estrogen on the heart like the synthetic progestins. Estriol is a bio-identical estrogen widely used in Europe that does not bind strongly to estrogen receptor and does not stimulate breast tissue. Numerous studies have shown that vaginal estriol does not increase the risk of breast cancer. It has safely been used in breast cancer survivors. However, higher doses of vaginal estradiol (> 25 mcg) and vaginal Premarin® provide systemic levels of strong estrogens that may stimulate breast tissue. If you are a breast cancer survivor, it is important that you understand this. Balanced hormones are the key to health and disease prevention.
Studies have shown that symptoms, including hot flashes, are relieved with continuous testosterone alone. Testosterone delivered by pellet implant is extremely effective therapy. In addition, it does not have the unwanted side effects of estrogen therapy. Over half of women treated with estrogen (especially the pellet implant) will experience uterine bleeding. If a menopausal patient has bleeding, she must notify her physician and have an evaluation, which may include a vaginal ultrasound and endometrial biopsy. Estrogen also stimulates the breast tissue can cause breast pain and cysts. It also increases the risk of breast cancer. Higher levels of estrogen (in the second half of the menstrual cycle) are needed for pregnancy. Most women feel better with lower levels of estrogen.
- Almost all symptoms, including hot flashes, are relieved with testosterone pellets alone. A study by Sherwin in 1985 looked at testosterone, testosterone with estradiol, estradiol alone, and placebo. The group of women who responded best had (somatic, psychological and total score) had testosterone alone! The groups that did the worst…estrogen alone and placebo. Higher levels of testosterone were associated with a better response. These results are expected. Testosterone is the major ‘substrate’ for estrogen production in the brain, bones, vascular system, breast, and adipose tissue. Some physicians do not understand this and may insist that estrogen therapy is needed.
- Excess estrogen can cause anxiety, weight gain, belly fat, tender breasts, emotional liability, symptoms of PMS, and mood swings. Long-term exposure to stronger estrogens like estradiol and Premarin can increase the risk of breast cancer. In addition, there is exposure to many estrogen-like chemicals.
- Some women (and men) ‘aromatize’ or convert too much testosterone to estradiol, which can interfere with the beneficial effects of testosterone. An ‘aromatase inhibitor’ (i.e. anastrozole) may be prescribed to prevent this. Patients, including breast cancer survivors, may be treated with the combination testosterone-anastrozole.
Some patients begin to ‘feel better’ within 24-48 hours while others may take a week or two to notice a difference. Diet and lifestyle, along with hormone balance are critical for optimal health. Stress is a major contributor to hormone imbalance and illness. Side effects and adverse drug events from prescription medications can interfere with the beneficial effects of the testosterone implant.
Women who are treated with testosterone implants alone (no estrogen therapy) do not require progestin therapy.
However, if estradiol, or other estrogen therapy is prescribed, progestins are also needed. The main indication for the use of synthetic progestins, like Provera® or progesterone, is to prevent the proliferation (stimulation) of the uterine lining caused by estrogen. Progestin therapy is NOT required if estrogen therapy is not prescribed. However, there may be health benefits to the hormone, progesterone.
Hormone levels may be drawn and evaluated before therapy is started. This may include an FSH, estradiol, testosterone (free and total) for women. Men need a PSA (prostate specific antigen), sensitive estradiol, testosterone, LH, liver profile, and blood count prior to starting therapy. Thyroid hormone levels (TSH) may also be evaluated.
In men, follow up levels, including a PSA, blood count and estradiol, may be obtained prior to subsequent testosterone implantation. Men must notify their primary care physician and obtain a digital rectal exam each year. Women are advised to continue their monthly self-breast exam and obtain a mammogram and/or Pap smear as advised by their gynecologist or primary care physician.
The cost for the insertion of pellets varies, depending on the dose of the hormone and the number of pellets needed. Men need a much larger dose of testosterone than women and the cost is higher. Pellets need to be inserted 2 to 4 times a year depending on how rapidly a patient metabolizes hormones.
When compared to the cost of drugs to treat the individual symptoms of hormone decline, pellets are very cost effective.
Some insurance companies cover the cost of pellets, especially in men. Others do not. Patients may want to contact their insurance companies to see if their costs will be reimbursed. Prevention is much more cost effective than disease.
Testosterone pellets may be used in pre-menopausal females (women who have not stopped menstruating). Testosterone has been shown to relieve migraine or menstrual headaches, help with symptoms of PMS (pre menstrual syndrome), relieve anxiety and depression, increase energy, help with sleep, and improve sex drive and libido. If a pre-menopausal female has a testosterone pellet inserted, she must use birth control. There is a theoretical risk of ‘masculinizing’ a female fetus (giving male traits to a female fetus).
Very rarely, a patient will develop local zone of redness (3-8 cm) and itching at the site of the testosterone implant. There is minimal or no tenderness and no other sign of infection. Pellets are made of up testosterone, stearic acid, and PVP (povidone). Patients may react to the PVP. Implants can be compounded or made without PVP. Many patients who develop a local reaction to the implant have low cortisol levels and upon further questioning, have symptoms of adrenal insufficiency. Cortisol testing may be recommended. If needed, Benadryl works well for the itching.
In conclusion, testosterone therapy by implantation of pellets is a safe and effective method of hormone therapy for both men and women. Continuous administration of hormones by pellets is convenient and economical for the patient. Pellet implantation has consistently proven more effective than oral, intramuscular, and topical hormone therapy with regard to bone density, sexual function, mood and cognitive function, urinary and vaginal complaints, breast health, lipid profiles, hormone ratios and metabolites.
In 2004, Dr. Scott Hernberg, founded Tomorrow’s Wellness Center in Northfield, NJ. Located in the Atlantic City Area, Dr. Scott turned his energy and passion from being a leader in Peri-Operative Medicine to creating a holistic, technologically advanced wellness center that helps individuals feel well and look their best.