How the Eye and Brain Handles Removal of Natural Waste

eye cleanEye conditions such as age-related macular degeneration, cataracts, glaucoma, and diabetic retinopathy usually do not have a single cause. Instead, they arise from a mix of influences, including genetics, environment, age, diet and nutrition, and oxidative stress. Among these, oxidative stress is especially important because it directly affects a vital cellular process called autophagy.

Autophagy is the body’s built-in “cellular housekeeping” or recycling system. It allows cells in the eyes and brain to break down and reuse worn-out components, including damaged mitochondria and large, clumped proteins.[1. Kulkami VV, Maday S. Compartment-specific dynamics and functions of autophagy in neurons. Dev Neurobiol. 2018;78(4):298-310. doi:10.1002/dneu.22524] When autophagy is working properly, it helps maintain healthy cell function. But when this process is disturbed, cellular waste can build up, organelles are not renewed as they should be, and the normal physiology of the eye can begin to break down. Continue reading “How the Eye and Brain Handles Removal of Natural Waste”

Essential Nutrients for Eye Health: Evidence-Based Guide to Vitamins, Antioxidants, and Supplements

senior takes vitamins and nutrients for eyesProtecting your vision doesn’t have to be complicated or costly. Decades of peer‑reviewed research show that specific nutrients—especially antioxidants, carotenoids, and omega‑3 fatty acids—can help maintain healthy eyes and reduce the risk of common conditions like cataracts, age‑related macular degeneration (AMD), glaucoma, and diabetic retinopathy. While a colorful, nutrient‑dense diet is foundational, therapeutic levels are often difficult to reach through food alone. This guide summarizes key nutrients, food sources, and targeted supplements, drawing on nearly 25 years of research curation at Natural Eye Care and over 45 years of clinical experience by Dr. Marc Grossman. Continue reading “Essential Nutrients for Eye Health: Evidence-Based Guide to Vitamins, Antioxidants, and Supplements”

How Are the Eyes a Window to Brain Health? What Eye Scans Reveal About Alzheimer’s, Parkinson’s, and Dementia

Seniors walking their dog to support brain and eye health

Studies continue to show strong connections between eye health and brain diseases, with the retina offering a “window” to the brain for early detection and monitoring of conditions. Early signs of diseases that can appear in the eyes include Alzheimer’s Disease, Multiple Sclerosis (MS), and Parkinson’s. Changes in retinal nerve fiber, pupil dilation, and even protein deposits in the eye, such as amyloid beta, can mirror changes occurring in the brain, providing potential non-invasive diagnostic tools and insights into disease progression.

The eye is, in many ways, an outpost of the brain. They share similar types of nerve cells, blood vessel patterns, and immune defenses. Uniquely, the eye lets clinicians look directly at living nerve tissue and tiny blood vessels—no incision required. That makes it a powerful early-warning system for health changes. As imaging technology advances, we are spotting signs of disease earlier and with greater precision. And with today’s data-rich eye scans, artificial intelligence is beginning to help identify subtle patterns that humans might miss, potentially improving detection and guiding care sooner. [1. Li, Xinyu, et al. “Computer Vision for Brain Disorders Based Primarily on Ocular Images.” Frontiers in Neurology, vol. 12, 2021, doi:10.3389/fneur.2021.584270.] [2. Zhao, Lei, et al. “Retinal Microvascular Signs and Cognitive Impairment: A Systematic Review.” Frontiers in Neuroscience, vol. 14, 2020, doi:10.3389/fnins.2020.566428.]

Continue reading “How Are the Eyes a Window to Brain Health? What Eye Scans Reveal About Alzheimer’s, Parkinson’s, and Dementia”

Stevia, Monk Fruit and Other Sugar Alternatives for Better Health

Monk Fruit Sweetener
Monk Fruit
Stevia, monk fruit, and other natural sugar substitutes offer sweetness  without the health risks of refined sugar or artificial sweeteners. In this article, we will cover the benefits and safety of these alternatives. And, we will talk about why cutting back on refined foods and steering clear of chemical sweeteners can make a real difference for your long-term health. Choosing the right sweetener is not just about calories or taste. Reducing your intake of refined sugars and processed foods can help lower your risk of diabetes, heart disease, and other chronic conditions. At the same time, avoiding artificial sweeteners may support better gut health, metabolism, and overall wellness.

Continue reading “Stevia, Monk Fruit and Other Sugar Alternatives for Better Health”

Poor Diets and Ultra-Processed Food Damage Mental Health and Vision

girl choosing between healthy and unhealthy dietIn the USA, our diets are usually high in ultra-processed foods, fat, sugar, salt, and empty calories. Poor nutrition has been linked to declines in mental health, increasing the risk of depression and anxiety. It can also compromise eye health, contributing to conditions like glaucoma, diabetic retinopathy, cataracts, and macular degeneration. A nutrient-poor diet can also impair brain, cardiac, and neurological function, weaken immunity, and contribute to obesity. Continue reading “Poor Diets and Ultra-Processed Food Damage Mental Health and Vision”

Nattokinase Supplements for Heart Health Benefits

Did you know that two substances of Asian origin, nattokinase and serrapeptase, have significant health benefits? Scientific studies have revealed some of the reasons why longevity is associated with regular consumption of serrapeptase and nattokinase supplements. Specifically, we will discuss cardiovascular disease, eye issues such as floaters, macular degeneration, and diabetic retinopathy, internal scar tissue from autoimmune disorders, lung disease, sinusitis, neurological disorders, and inflammatory bowel disease. Continue reading “Nattokinase Supplements for Heart Health Benefits”

Green Tea Benefits for Seniors – Antioxidants for the Eyes, Brain, and Body

woman drinking green teaOxidative stress happens everywhere in the body and can create havoc over time. Many eye and brain diseases are triggered or exacerbated by oxidative stress. The body counteracts this stress by producing antioxidants. However, you must also ingest additional antioxidants through healthy food, drinks, and supplements. Green tea, rich in antioxidants, offers protective benefits for eye health by combating oxidative damage.[1. Merin, S. (1991). Inherited cataracts. In Merin S. editor. Inherited Eye Diseases, (pp. 86-120), New York: Mercel Dekker.] At pennies per cup, this convenient and tasty beverage has been studied for its special antioxidant properties. What are the green tea benefits for seniors? Read on to find out. Continue reading “Green Tea Benefits for Seniors – Antioxidants for the Eyes, Brain, and Body”

Poor Circulation is Linked to Macular Degeneration, Glaucoma and Diabetic Retinopathy

Poor circulation from heart disease Poor circulation significantly contributes to eye diseases, including macular degeneration, glaucoma, and diabetic retinopathy. Heart disease and diabetes lead to poor circulation. Our eyes and brain require the most oxygen and nutrients, so they need healthy blood circulation. In this article, we will explore the connections between age-related macular degeneration (AMD) and poor circulation. We will also examine the relationship between heart disease and glaucoma. Additionally, we will discuss how diabetes affects circulation and leads to diabetic retinopathy.

Macular Degeneration and Poor Circulation

Age-related macular degeneration (AMD) is the leading cause of severe and irreversible vision loss in developed countries.[1.Klein R Klein BE Tomany SC Cruickshanks KJ . The association of cardiovascular disease with the long-term incidence of age-related maculopathy: The Beaver Dam Eye Study. Ophthalmology. 2003;110:636–643.] [2.Evans J Wormald R . Is the incidence of registrable age-related macular degeneration increasing? Br J Ophthalmol. 1996;80:9–14.].The macula is a tiny spot in the middle of the eye’s retina, where we get our most detailed vision. Heart disease is a major contributing factor. Numerous studies have linked hypertension and atherosclerosis with AMD.[3.Vingerling JR Dielemans I Bots ML Hofman A Grobbee DE de Jong PT . Age-related macular degeneration is associated with atherosclerosis: The Rotterdam Study. Am J Epidemiol. 1995;142:404–409.] [4.Hyman L Schachat AP He Q Leske MC . Hypertension, cardiovascular disease, and age-related macular degeneration. Age-Related Macular Degeneration Risk Factors Study Group. Arch Ophthalmol. 2000;118:351–358.] [5.van Leeuwen R Ikram MK Vingerling JR Witteman JC Hofman A de Jong PT . Blood pressure, atherosclerosis, and the incidence of age-related maculopathy: The Rotterdam Study. Invest Ophthalmol Vis Sci. 2003;44:3771–3777.] [6.Klein R Klein BE Tomany SC Cruickshanks KJ . The association of cardiovascular disease with the long-term incidence of age-related maculopathy: The Beaver Dam Eye Study. Ophthalmology. 2003;110:636–643.] Hundreds of peer-reviewed studies indicate that AMD can be very responsive to diet, exercise, and targeted supplementation.

The choroid is a thin layer of tissue in the eye’s middle wall, rich in blood vessels that supply oxygen and nutrients to the eye. Several cross-sectional studies have shown that blood flow in the choroid and retina is reduced in AMD.[7.Agnes Boltz, Alexandra Luksch, Barbara Wimpissinger, Noemi Maar, Günther Weigert, Sophie Frantal, Werner Brannath, Gerhard Garhöfer, Erdem Ergun, Michael Stur, Leopold Schmetterer; Choroidal Blood Flow and Progression of Age-Related Macular Degeneration in the Fellow Eye in Patients with Unilateral Choroidal Neovascularization. Invest. Ophthalmol. Vis. Sci. 2010;51(8):4220-4225.]  [8.M.L. Hibert, Y.I. Chen, N. Ohringer, W.J. Feuer, N.K. Waheed, J.S. Heier, M.W. Calhoun, P.J. Rosenfeld and J.R. Polimeni. Altered Blood Flow in the Ophthalmic and Internal Carotid Arteries in Patients with Age-Related Macular Degeneration Measured Using Noncontrast MR Angiography at 7T. American Journal of Neuroradiology September 2021, 42 (9) 1653-1660]

Poor circulation hurts the body’s ability to provide a healthy blood supply to the retina. This appears to induce ischemia (an inadequate blood supply) and hypoxia (inadequate supply of oxygen to the body’s tissues) in the retina. The retina is essentially starved of oxygen and essential nutrients. In severe cases, dry AMD develops into the more dangerous wet AMD.

Continue reading “Poor Circulation is Linked to Macular Degeneration, Glaucoma and Diabetic Retinopathy”

Aged Black Garlic Supports Glaucoma and New Eye-Related Research

aged black garlic bulbsAged black garlic, a culinary staple, is gaining recognition for its unique flavor and remarkable health benefits. Garlic has long been celebrated for its medicinal properties. Aged black garlic is a fermented food with even more potency and health benefits. Recent research has uncovered the benefits of aged black garlic, particularly in relation to the cardiovascular system and the eyes, including glaucoma and diabetic retinopathy. From improving optic nerve blood flow and reducing intraocular pressure to boosting HDL cholesterol levels and mitigating heart disease risks, aged black garlic is a versatile and powerful ally in promoting overall health. Continue reading “Aged Black Garlic Supports Glaucoma and New Eye-Related Research”

Oxidative Stress and Metabolic Syndrome

metabolic syndrome waist measurementExtra weight around the belly may not seem hazardous. However, a higher abdominal circumference is one of several contributing factors to Metabolic Syndrome. As a risk factor for diabetes and cardiovascular disease, Metabolic Syndrome can creep up over time. Hormones, insulin resistance, genetics, organ dysfunction, and mitochondrial dysfunction can play a role.

Lifestyle, including nutrition and exercise, are factors that contribute to Metabolic Syndrome, and are under our control. Therefore, preventing or reversing metabolic syndrome can improve both lifespan and quality of life. Diabetic retinopathy, central retinal artery occlusion, cataract, age-related macular degeneration, glaucoma, and dry eye syndrome are eye diseases with similar underlying risk factors to Metabolic Syndrome. Oxidative stress ties into all these problems. What is the science behind Metabolic Syndrome? What can you do to head it off? Continue reading “Oxidative Stress and Metabolic Syndrome”