Pioneering Eye Surgeon Sees Hope for Treating Macular Degeneration with Natural Hormones

By Debora Yost

Plant caroteinoids such as lutein and zeaxanthin were long ago shown to help prevent macular degeneration. But is there more that can be done to protect against this epidemic of blindness?

George W. Rozakis, MD is a Cornell-trained biomedical engineer specializing in laser eye surgery and lens implants. A pioneer in the field of LASIK surgery,1 Dr. Rozakis is now vigorously involved in anti-aging medical research.

Dr. Rozakis is focusing on a potential breakthrough in treating macular degeneration, a condition that gradually destroys central vision. Also called age-related macular degeneration, it is the leading cause of blindness in people aged 65 and older.

Dr. Rozakis believes that restoring the correct balance of natural hormones that decline with age can retard and possibly even reverse the progression of macular degeneration. To investigate this hypothesis, he is setting up a long-term study and is currently seeking subjects to participate in the trial.
Hormones and Your Vision

The hormonal link with macular degeneration began to evolve when Dr. Rozakis met another medical pioneer, Sergey A. Dzugan, MD, PhD, during a conference in Chicago four years ago. Dr. Dzugan is a cardiovascular surgeon and internationally known expert in anti-aging and hormonal medicine.

“Dr. Dzugan has done numerous studies2-4 and written numerous articles on the association between low hormone levels and multiple disease states, including the problem of atherosclerosis and cholesterol elevation,” says Dr. Rozakis. “As an ophthalmologist I was impressed by the evidence that restoring and optimizing levels of key hormones improve brain function, largely because the retina is part of the brain. For example, there is very impressive literature that testosterone slows down the progression of Alzheimer’s disease.5 Pregnenolone is extremely important for the brain and nervous system, as are progesterone and estrogens. Women whose progesterone levels drop develop negative personality changes.6 In animal models, pregnenolone and DHEA have been shown to profoundly stimulate the healing of neurologic injury.7-9 Women who enter into menopause at a young age develop macular degeneration, presumably because of the absence of estrogens.10,11 Blocking estrogens with the anti-cancer drug tamoxifen is harmful to the retina.12 This leads us to wonder if optimal hormonal health also positively impacts ocular health.”

“When an article appeared in the American Journal of Ophthalmology indicating that DHEA, or dehydroepiandrosterone, is exceptionally low in macular degeneration patients,13 I was shocked and excited,” says Dr. Rozakis. This finding provided a major clue that hormonal imbalance was part of the problem of macular degeneration.

“DHEA is like the Grand Central Station of hormone chemistry,” says Dr. Rozakis. “When DHEA levels drop, it strongly implies that levels of other hormones such as pregnenolone, estrogens, and testosterone are out of balance or suboptimal.” All of these hormones make the body thrive—they give us virility, fertility, and help us act and react quicker. Since the retina contains hormone receptors, hormones must be part of the biophysiology of vision itself.
Cardiovascular Link

Low DHEA levels in macular degeneration could also explain its association with heart disease, as it is known that macular degeneration is an independent risk factor for stroke and coronary artery disease. In a study conducted by Australian scientists,14 macular degeneration predicted a five-fold higher risk of cardiovascular mortality and a 10-fold higher risk of stroke mortality. After controlling for traditional cardiovascular risk factors, age-related macular degeneration predicted a doubling of cardiovascular mortality. Since hormone deficiency has been linked with both heart disease and eye disorders,13,15 it is a prime suspect that links the heart to the eye.

Further examination of the literature reveals a major review article from Italy that explains the importance of hormones to the retina.16 In this article, it is shown that the retina is able to attempt to make its own hormones, just like the brain. “The article also indicates that many of the hormones we use in anti-aging programs have a role in the retina, such as pregnenolone, DHEA, testosterone, estrogens, and progesterone. Few ophthalmologists and optometrists are aware of this relationship. This was the smoking gun that led to our hypothesis,” Dr. Rozakis notes.
Macular Degeneration and Cholesterol

A good theory needs to connect all the dots. Dr. Rozakis explains that one challenge in shaping his theory was explaining the presence of “drusen” or spots that appear in the retina in patients with macular degeneration. Many consider these spots to be “degradation products.”

Recently, Goldis Malek, PhD, and others17-19 found that cholesterol was present in those spots. This led some people to think that cholesterol-lowering agents, such as statins, might help macular degeneration—but they do not. In fact, there is concern that statins actually increase the risk of dry macular degeneration advancing to the neovascular form of the disease, whereby tiny blood vessels in the eye begin to bleed.20

Dr. Rozakis notes, “To Dr. Dzugan and me, the presence of cholesterol in the macula was the key piece of data that integrated everything. The presence of cholesterol in the macula suggests that the retina is trying to make hormones—but that it can’t. So, the body’s accumulation of cholesterol and drusen worsen.” He continues, “The macula can’t get the hormones it needs from the blood because there aren’t much there. As a result, if the macula is having trouble converting cholesterol into hormones, drusen form, and this results in the drusen we see in macular degeneration. Why the macula stops making hormones is unknown, but it is associated with aging. We can speculate that it happens because the enzymes which do the conversion decrease or are down-regulated with aging.”

“This same ‘story’ of cholesterol and hormones plays itself out in the body as a whole,” says Dr. Rozakis. “We do know that the adrenal gland, which produces DHEA, loses the ability to manufacture hormones as we age. As Dr. Dzugan published, this hormonal decline stimulates the liver to produce more cholesterol in an attempt to create more hormones.3 This is why restoring hormones to their normal levels causes the liver to produce less cholesterol. That same paradigm may be happening in the macula. This is the basis of our hypothesis. The goal therefore must be to provide the retina the hormones it needs through supplementation.”
Reviewing the Evidence

There is already evidence to support the notion that DHEA protects the eyes against oxidative damage21 and that the hormone pregnenolone improves electrical activity in the retina, as measured by the electroretinogram (ERG).22,23 There is also evidence to support the use of melatonin in the treatment of macular degeneration.24,25

The theory that optimizing hormones may help promote macular health is based on these scientific facts:

1.The macula, which is located in the center of the retina, uses hormones to function.16
2.The normal macula has the unique ability to make its own hormones.26
3.The bloodstream of patients with macular degeneration is deficient in hormones.11,13
4.Drusen—the tiny yellow abnormalities that appear behind the macula in individuals with macular degeneration—contain cholesterol.17-19
5.Age-related macular degeneration is related to cardiovascular mortality.14

Dr. Rozakis speculates that the solution for treating macular degeneration is to measure and restore age-depleted hormones to optimal levels so that the macula can absorb the hormones it needs from the blood. “Hopefully restoring hormones to their normal levels in the bloodstream will cause the macula to stop absorbing cholesterol and, as a result, drusen formation will hopefully decline,” says Dr. Rozakis. “We certainly need a better understanding of the pathophysiology of this blinding disease.”27
A Higher Level of Natural Treatment

Dr. Rozakis sees hormone restoration as a strategy to improve on existing studies showing that certain nutrients can reduce the progression of age-related macular degeneration. The long-term Age-Related Eye Disease Study (AREDS), conducted by the National Eye Institute, found that supplementing the anti-oxidants beta-carotene, vitamin C, vitamin E, and the mineral zinc reduced the risk of developing advanced states of macular degeneration in more than 4,700 high-risk patients aged 55 to 80 who were enrolled in the study.28

The specific amounts of nutrients used by the study researchers were:

*500 mg of vitamin C
*400 IU of vitamin E
*15 mg of beta-carotene
*80 mg of zinc
*2 mg of copper.

The copper, administered as cupric oxide, was included in the formula to prevent copper-deficiency anemia, which is associated with high zinc intake.

As a result of the AREDS trial, many ophthalmologists are recommending supplements containing the study’s recommended dosages for patients with or at a high risk for age-related macular degeneration.

Dr. Rozakis is currently developing his own study to test his theory concerning the relationship between low levels of DHEA and macular degeneration. “Our study is going to focus on overall hormonal balance and will include the supplements used in the AREDS study as well,” says Dr. Rozakis. “Our goal is to do everything we can to stop macular degeneration. The fact that hormones are much more powerful than vitamins holds hope that the results will be significant.”

If you have any questions on the scientific content of this article, please contact a Life Extension Health Advisor at 1-800-226-2370.