Macular Degeneration


Age-related Macular Degeneration (AMD) is the progressive decline of vision caused by degeneration of the photoreceptors in the macula, the part of the retina where images are focused.

 
  • Overview
  • Action Plan
  • Ask The Doctor
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Overview


In 2002, the prevalence of AMD was found to be 2.8% among those 50 years of age and older.1 AMD is classified as either wet or dry. Approximately 80% of patients have the dry form of the disease, which is characterized by the deposition of waxy, yellow drusen in the retina. Wet AMD is characterized by the growth of red blood vessels and is a more severe and rapidly progressing form requiring laser surgery or injections of medications that stop the growth of blood vessels. Late wet AMD is 16.6 times more likely to develop in patients older than 75 years.2 AMD is one of the leading causes of blindness in industrialized countries.3

AMD patients experience blurry vision initially. Straight objects may appear bent. There appears to be a dark spot at the center of the visual field. This loss of central vision makes it difficult to read as parts of words may be missing. An early symptom of wet AMD is that straight lines appear wavy.

A diet low in leafy greens and orange and yellow vegetables and fruits is a major risk factor for AMD, as it leads to low levels of lutein and zeaxanthin. These two carotenoids accumulate in the macula providing antioxidant protection for the eye and enhancing visual acuity and contrast. Poor nutrition also contributes to obesity and cardiovascular risk factors, such as high blood pressure and atherosclerosis, which increase the risk of AMD.4 Red meat intake is a risk factor for AMD,5 likely due to the saturated fat content and resultant inflammation of the retina. Smoking increases the risk of AMD; smoking one pack per day for any length of time can increase risk two to three times that of a lifelong nonsmoker.4 Family history, aspirin use, previous cataract surgery, and more than three alcoholic drinks per day are also associated with increased risk.

 
References
  1. Prevalence of visual impairment and selected eye diseases among persons aged >/=50 years with and without diabetes--United States, 2002. MMWR Morb Mortal Wkly Rep 2004, 53:1069-1071.
  2. Klein R, Klein BE, Knudtson MD, et al. Fifteen-year cumulative incidence of age-related macular degeneration: the Beaver Dam Eye Study. Ophthalmology 2007, 114:253-262.
  3. Schleicher M, Weikel K, Garber C, Taylor A. Diminishing risk for age-related macular degeneration with nutrition: a current view. Nutrients 2013, 5:2405-2456.
  4. Chakravarthy U, Wong TY, Fletcher A, et al. Clinical risk factors for age-related macular degeneration: a systematic review and meta-analysis. BMC Ophthalmol 2010, 10:31.
  5. Ersoy L, Ristau T. Nutritional risk factors for age-related macular degeneration. 2014, 2014:413150.

Action Plan


Diet

  • A Nutritarian diet with leafy greens and orange and yellow vegetables and fruits will provide sufficient lutein and zeaxanthin, carotenoids that are associated with improved eye health.
  • Typically, patients are given eye health supplements containing lutein and zeaxanthin, however, several trials show that beta-carotene supplements are associated with increased risk of lung cancer, cardiovascular disease,1 and overall mortality.2 A Nutritarian diet supplies a sufficient amount of these carotenoids as well as countless other phytochemicals that work synergistically to promote eye health. I have observed cases of macular degeneration that have improved and even totally resolved in patients following a Nutritarian diet style.

Tobacco cessation

Fifteen years after quitting smoking, the risk of AMD is decreased to normal levels.3

Find additional help

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References
  1. Goodman GE, Thornquist MD, Balmes J, et al. The Beta-Carotene and Retinol Efficacy Trial: incidence of lung cancer and cardiovascular disease mortality during 6-year follow-up after stopping beta-carotene and retinol supplements. J Natl Cancer Inst 2004, 96:1743-1750.
  2. Bjelakovic G, Nikolova D, Gluud LL, et al. Antioxidant supplements for prevention of mortality in healthy participants and patients with various diseases. Cochrane Database Syst Rev 2012, 3:Cd007176.
  3. Chakravarthy U, Wong TY, Fletcher A, et al. Clinical risk factors for age-related macular degeneration: a systematic review and meta-analysis. BMC Ophthalmol 2010, 10:31.

Ask The Doctor


The following are sample questions from the Ask the Doctor Community Platinum and higher members can post their health questions directly to Dr. Fuhrman. (All members can browse questions and answers.)

Q.

Please advise me on how to best address macular degeneration. My doctor advised that it is an irreversible condition. He recommended a mega Vitamin A supplement as the only means to delay the progression of the disease. I know that you do not recommend vitamin A, so I have stopped taking it. Can you please advise me on dietary and/or supplemental alternatives?

A.

The best thing you can do to mitigate further decline is to have a wide array of high nutrient dense vegetables and fruits. This is not an irreversible condition. Eat lots of leafy, cruciferous greens, carrots, spinach, squashes, berries, mango, beets, and nuts/seeds. Women’s Daily Formula and DHA/EPA Purity would be of benefit. Rely on food to get the thousands of important phytonutrients that you need to fight this disease. You may want to include a blended green salad smoothie or a glass of green heavy (carrot/beet) juice each day.

 
Q.

My eye doctor just told me that I have Wet Macular Degeneration in my left eye. The doctor and I did speak a bit about options, and among them was the injection of Avastin. I have heard you say that you have been very successful in halting/reversing macular degeneration. The doctor said they may want to do something on the spot, but I want to get your input.

My diet is fairly good, about 85% Nutritarian. My only issue is that I drink six cups of coffee with sugar per day. Should I give up all coffee right now? I also take supplements such as zinc, lutein and zeaxanthin, astaxanthin, dha/epa, B12, and D3.

  1. What specific recommendations do you have?
  2. Is there any reason that I should rush into a treatment on the spot? I have read that with the wet type, vision loss could happen very quickly.
A.

Yes, stop the coffee, or go down to one daily. Eat a diet high in mushrooms, cruciferous greens, shallots, and scallions for their anti-angiogenic effects. Tumeric, flaxseeds, berries, and resveratrol may also help.

Move up to 100 percent healthy eating for now. Remember G-BOMBS. Whether you start treatment immediately or not depends on the degree it has advanced, but it sounds like this is early enough that you can wait a few months and do a perfect diet and recheck to see if it is improving.

 
Q.

I read a summary of a study that led me to believe an egg a day would give me the lutein and zeaxanthin necessary for preventing macular degeneration. The summary suggested there are plant sources for what would be needed for prevention but said plant sources were not as useable by the body. Are there plant sources that the body can readily benefit from to prevent macular degeneration? What would these be?

A.

Macular degeneration is a dietary-caused disease that is improved or reversed with a Nutritarian diet and worsened with more animal products in the diet (like eggs). It is not just from a deficiency of lutein and zeaxanthin, but those are nutrients abundant in greens and other natural plant-foods, which is how they get into eggs.