Having sharp eyesight is a major plus in the sensory arsenal. When it comes to overall eye health, nutrition plays a significant role. These nutrients help prevent eye strain, age-related macular degeneration, and damage to the eyes from UV rays and preserve overall eye health. Let's learn in detail.
Normal Vision and Common Eye Problems
Eye problems become more likely as people get older. Examples of common vision problems are:
- Cataracts - When this happens, your vision becomes blurry. Cataracts, a natural aging process, are the leading cause of impaired vision and blindness.
- Diabetic retinopathy - Diabetic retinopathy, in which the retina's blood vessels are damaged due to excessive blood sugar, is a leading cause of visual impairment and blindness in the diabetic population.
- Dry eye syndrome - A condition in which the eyes do not produce enough tears, leading to discomfort and, in extreme cases, vision loss from dry eye.
- Glaucoma - Degeneration of the optic nerve, which sends visual information from the eyes to the brain, is the underlying cause of age-related macular degeneration. Glaucoma is the most common cause of irreversible eye damage and blindness.
- Macular degeneration - The macula is the macula that describes the central retina. Age-related macular degeneration (AMD) is a leading cause of visual impairment and blindness among adults in industrialized nations.
Although genetics do have a role, a person's diet may have a far more significant effect on their disease risk.
Essential Nutrients For Healthy Eyes
Here are essential nutrients to maintain healthy eyes:
Antioxidants: Lutein And Zeaxanthin
An antioxidant called lutein and zeaxanthin are macular pigments. These light-sensitive cells are most densely concentrated in the macula, the central region of the retina, which runs along the back of the eyeball.
The antioxidants lutein and zeaxanthin provide a natural defense against UV radiation. In addition, they may prevent blue-light-caused eye damage. A study showed that the amount of lutein and zeaxanthin in the retina is directly linked to the quantity ingested. Consuming 6 mg of lutein and zeaxanthin daily significantly reduced the risk of age-related macular degeneration in a clinical trial of middle-aged and older adults. Those whose diets were highest in lutein and zeaxanthin had a 43% lower risk of macular degeneration.
In many cases, lutein and zeaxanthin are found together in the same meal. Foods such as spinach, Swiss chard, kale, parsley, pistachios, and green peas are excellent choices. Egg yolks, sweet maize, and red grapes may also be rich sources of lutein and zeaxanthin. Due to their high fatty acid content, egg yolks are widely regarded as one of the most significant fat sources. However, a salad with avocado or other healthy oils will help your body absorb the carotenoids more effectively.
One of the leading causes of preventable cataracts is a lack of vitamin A in people's diets. This is because the photoreceptors in your eyes can't function properly without vitamin A.
Lack of vitamin A in the diet can lead to night blindness, dry eyes, and even life-threatening illnesses. Vitamin A can only be found in foods that come from animals. For example, liver, egg yolks, and dairy products are rich sources of vitamin A. Vitamin A can also be obtained from the provitamin A carotenoids that are naturally present in a wide variety of fruits and vegetables such as leafy greens, spinach, and carrots.
Being a fat-soluble antioxidant, vitamin E prevents the oxidation of the fatty acids that make up its antioxidant properties. The retina contains many fatty acids, so vitamin E is essential for maintaining good eye health. Retinal degeneration and blindness can result from insufficient vitamin E from food. However, the benefits of taking vitamin E supplements are debatable.
Supplementing with vitamin E has not been proven in randomized controlled trials to prevent or delay the onset of cataracts. However, almonds, sunflower seeds, and vegetable oils like flaxseed oil are excellent dietary sources of vitamin E.
The eyes need more antioxidants than most organs. Despite the lack of research on the topic, the antioxidant vitamin C plays a crucial role in preserving healthy eyes. The vitamin C concentration in the eye's aqueous humor is higher than in any other bodily fluid tested. Aqueous humor is the fluid that protects the eye's cornea.
Although vitamin C appears to play a protective role in your eyes, it is unclear whether supplementation gives additional benefits for people who are not deficient. Bell peppers, citrus fruits, guavas, kale, and broccoli are fruits and vegetables packed with vitamin C.
The eyes contain significant amounts of zinc. Zinc, which is present in antioxidant superoxide dismutase and many other essential enzymes, is a powerful antioxidant. In addition, the pigments in the retina allow us to see. As a result, a lack of zinc may lead to night blindness. Oysters, pork, pumpkin seeds, and peanuts are all excellent food sources of zinc.
Omega-3 Fatty Acids
Omega-3 fatty acids (such as EPA and DHA) are essential for healthy eyes. The retina has a disproportionate amount of DHA, suggesting that it may have a protective role in healthy eyesight. However, for their vision and cognitive growth, it's also essential for young children. Therefore, not getting enough DHA might lead to eye problems, especially in children and teenagers. At long last, there's a shred of proof that taking omega-3 supplements can aid dry-eye sufferers.
In addition, some eye problems may be avoided by taking omega-3 fatty acids. For example, the risk of diabetic retinopathy was lowered in a study of middle-aged and older persons with diabetes who took at least 500 mg of long-chain omega-3s daily. Patients who took an EPA and DHA supplement regularly for three months reported a considerable improvement in their dry eye symptoms. Increases in tear production were used for this purpose.
Fish oil is the most acceptable meal option for your daily dose of EPA and DHA. In addition, supplements containing omega-3 fatty acids, such as fish oil or microalgae, are widely available.
Omega-6 Fatty Acid
Gamma-linolenic acid (GLA), an omega-6 fatty acid, is present at low levels in the usual people's diet. GLA, unlike many omega-6s, has anti-inflammatory properties. GLA can be found in several different oils, but two of the most significant sources are evening primrose oil and starflower oil.
Risk factors for many chronic diseases, including eye disorders, are reduced when a healthy lifestyle is followed. Experts recommended that getting enough nutrients might help you reduce your risk. Perhaps other vitamins contribute to ocular health as well. However, remember the rest of your body as well! The same kind of food that's excellent for the body, in general, can also help the eyes.
← Older Post Newer Post →