Eye Healthy Foods for the Holidays

Sharing meals with family and friends is one of the major highlights of the holiday season. Whether you treat yourself to old recipes or you try new ones, consider adding these eye-healthy foods to your holiday feast!

LEAFY GREEN VEGETABLES

Be sure to start your holiday meal with a salad, it’s an excellent way to ensure that you and your guests get plenty of zeaxanthin and lutein, two nutrients that help protect your central vision. Adding kale, spinach, or romaine lettuce to salads helps your eyes absorb damaging blue light, combats the effects of cigarette smoke and pollution, and also decreases your risk of developing age-related macular degeneration (AMD), a condition that affects the macula, the part of your retina responsible for central vision. You will also find lutein in grapes, kiwis, broccoli, peas, corn, Swiss chard, and collard greens. 

TURKEY AND BEEF

Turkey and lean beef, two of the main ingredients in many holiday meals, keep your eyes strong and healthy. Both foods are high in zinc, a nutrient important to the retina and the choroid layer under the retina. Zinc is essential for good night vision. Eating foods that are high in the nutrient can also reduce your risk of cataracts and AMD. Other foods that contain zinc include pork, dairy products, chick peas, black-eyed peas, crab, oysters, beans, spinach, mushrooms, cashews, and almonds. 

CARROTS

It wasn’t an old wives tale, it is true Carrots are good for your eyes! They contain beta carotene, a substance that turns into vitamin A when eaten. Eating carrots can benefit your night vision and could possibly reduce your risk of cataracts, AMD, and dry eyes. Other foods that contain beta carotene include pumpkin, sweet potatoes, and butternut squash. All great ingredients to include into your holiday feast. 

FISH

Fish contain omega-3 fatty acids, which can reduce your risk of developing AMD, dry eye, and glaucoma. Salmon, mackerel, flounder, tuna, halibut, herring, and sardines would be a great addition to your holiday meals.
 

WHOLE GRAINS

Whole grains reduce your risk of heart disease, obesity, and type 2 diabetes and can also decrease your risk of AMD. Substituting whole grain flour for white flour in holiday breads and muffins is a simple way to boost your whole grain intake. Other good whole grain sources include wild rice, brown rice, popcorn, oatmeal, bulgur, barley, buckwheat, and couscous. 

FRUIT

Fruits high in vitamin C, such as strawberries and oranges, also offer important vision benefits. Vitamin C is an antioxidant, a substance that can prevent cell damage caused by free radicals. Vitamin C-rich foods help keep the collagen in your cornea healthy and reduce the risk of cataracts and AMD. You can also find vitamin C in grapefruit, kiwi, blueberries, peas, broccoli, and tomatoes.


Sensible food choices, along with regular eye examinations, can help you protect your vision. For eye healthy recipes, visit our EYE COOK section in our website.

Happy Eating and Happy Holidays!

Age-Related Macular Degeneration & Alzheimer’s

Similar Diseases, Different Locations, Possible Common Treatments

There are many similarities between two age-related diseases (Age-related Macular Degeneration and Alzheimer’s disease) that can affect thousands of people world-wide. In the United States there are 11 million people that have some form of AMD and it is estimated to grow to 22 million by the year 2050. Furthermore, in 2016 it was estimated that the cost to care for those with AMD was $512 billion. Worldwide it is estimated that by 2020, there will be 96 million people with AMD. National Eye Institute 

The second aging disorder that causes high degree of damage is Alzheimer’s disease. Presently, in the United States there are 5.4 million people with Alzheimer’s disease and this will increase to approximately 13.8 million by 2050. In 2016, the cost for caring for these patients was $236 billion. Worldwide the numbers of Alzheimer’s patients are estimated to be 44 million and the global cost is $605 billion. Alzheimer’s Association

Similar Risk Factors

The risk factors for both AMD and Alzheimer’s disease are very similar to each other. These include aging, smoking, and high cholesterol. Both diseases are found more frequently in women than men and in approximately 5% to 15% the diseases are found in more than one family member. There is also a genetic risk factor of a lipid transport protein called Apolipoprotein E (ApoE) that provides elevated risk in AMD patients if they carry the allele 2 variant and higher risk in Alzheimer’s patients if they carry the allele 4 variant.

In AMD and Alzheimer’s disease there are 3 events that make the pathologies very similar except that they are found in different locations, either the retina or the brain.

1. Amyloid beta is a protein that is not present in normal tissues but larger quantities accumulate in the brain for Alzheimer’s patients and are identified to be plaques by MRI scans. The presence of these plaques is defining (pathognomonic) for Alzheimer’s disease. In AMD patients amyloid-beta deposits are found to accumulate underneath the retina and form small clumps of protein-lipid materials called drusen. This is significant because the amyloid-beta is very toxic and harmful to the surrounding cells and when it is accumulating in tissues, it causes the cells to be damaged and loss their abilities to function.

2. A second feature of both AMD and Alzheimer’s disease is that there are high levels of tissue damage, loss of function and a lot of cell death in the retina and brain.

3. Finally, both diseases have damage to the mitochondria, which are small units within the cells that are critical to keeping the cells alive. The mitochondria are the “batteries” of the cell providing energy to keep the retina and brain cells functioning. Mitochondria are similar to the batteries in a flashlight. You can have a very expensive flashlight but if you do not have good batteries, the flashlight will not work. It is a similar situation to the cell. As long as the mitochondria are healthy and providing energy the cells can function. However, when the mitochondria start to die, then the cells will lose their functions and cell death will occur. This is true for all types of cells in the body, such as nerve cells, muscle cells, retinal cells, heart cells, etc. In other words, healthy mitochondria are critical to keep cell alive and functioning well.

Future Treatments

Using a novel in vitro model called cybrids (cytoplasmic hybrids), Dr. Cristina Kenney’s laboratory has shown that when mitochondria from patients with AMD are placed into specialized human retinal cells, the AMD mitochondria will cause the cells to die more rapidly than normal because they are so damaged. With this important discovery, the goal of the research group has been to identify drugs and proteins/peptides that can rescue the damage AMD mitochondria and protect the retinal cells. Their research is moving forward very quickly and testing drugs is the top priority for Dr. Kenney’s group. By rejuvenating the mitochondria from ‘old-damage’ to ‘new-healthy’ will prolong the health of the retinal cells and protect vision loss from AMD. What is learned in these studies will have long reaching applications to other aging-diseases such as Alzheimer’s and Parkinson’s diseases.

A Healthy Diet for Your Eyes!

As we age, it’s normal to experience a change in eyesight, so it is important that we’re doing everything we can to keep our eyes clear and healthy. Eating a nourishing diet is not only good for your body, it’s also great for your eyes. There’s an easy way to improve your eye health: Start by making the same nutritious food choices that are good for your overall health and wellness.

The following vitamins, minerals and other nutrients are essential for good vision and may protect your eyes from sight-robbing conditions and diseases such as Age-Related Macular Degeneration (AMD).

Fruits and Vegetables

The nutrients in both fruits and vegetables provide antioxidants, which can help maintain healthier eyes. Fruits and vegetables also provide protection because many of their nutrients deliver antioxidants that our bodies cannot synthesize.

For example, lutein and zeaxanthin are important antioxidants that help prevent degeneration in the lens and retina. Eating a diet rich in these carotenoids helps reduce the risk of AMD by fighting oxidation in the retinal cells of the eye.

Foods rich in lutein and zeaxanthin are typically dark-colored fruits and vegetables, including: 

  • spinach
  • kale
  • collard greens
  • yellow corn
  • carrots
  • kiwi
  • mangos
  • melons

Omega-3 Fatty Acids

Eating fatty fish, such as salmon, tuna, mackerel, and sardines, that are rich in omega-3 fatty acids also helps lower the risk of AMD. Omega-3 fatty acids are rich in docosahexaenoic acid (DHA), which is important for eye health and visual function. People with dry eye syndrome (i.e., low tear production) can benefit from a diet rich in omega-3 fatty acids because dry eye is linked to low levels of DHA.

However, studies have found that omega-3 fatty acid vitamin supplements may not provide as much protection. That means it’s better to eat the fish than just take omega-3 supplements. It’s important to note that heavy consumption of fish can contribute to high mercury levels (How Much is Too Much Mercury). 

You can also find omega-3 fatty acids in plant-based sources, such as:

  • nuts
  • seeds (flax seeds and chia seeds)
  • dark, leafy greens (romaine, arugula, spinach)

B Vitamins

Higher levels of B vitamins may lower your risk of developing AMD.

Foods that are high in vitamins B6 include:

  • bananas
  • chicken
  • beans
  • potatoes
  • fish
  • liver
  • pork

 

Foods that are high in vitamin B12 include:

  • dairy
  • eggs
  • meat
  • poultry
  • shellfish

 

 

Consider large salads as your main course for lunch and dinner, adding relatively small amounts of animal protein, if desired. You also can opt for low-glycemic foods, such as whole grain breads and pastas, which can lower the risk of AMD by stabilizing blood glucose levels.

For healthy recipes visit Eye Cook.

Your Vision is Your Wealth

We see more than 24 million images in our average life span. The huge task in a human body is seeing, which requires half of one’s brain to function. Our eye lenses are equal to 576 megapixels Camera lens.

One man out of every twelve men is color blind and the chances of losing eye function increase with age. In the UK 74% of people correct their eyesight by Laser Surgery, Wearing Contact lens and glasses to have a better view. Our eyes take only 48 hrs to repair from a corneal scratch. In order to avoid these problems, restrict the continuous usage of contact lens less than 19 hours in a day.

For a better understanding, read this infographic from Paul Gill Optician.

Things-you-did-not-know-about-your-Eyes_22.11.2016

Source and Author:
Amy Lynn
Paul Gill Optician

AMD and a Healthy Diet: How they Relate

While there is still no concrete answer as to why some do not develop age-related macular degeneration (AMD) and other’s do, significant studies have proven the importance of a healthy diet and the mitochondria.

AMD is the leading cause of vision loss for those over 60 years of age in the developing countries. For decades we have studies that show the genetics and environmental factors associated with AMD. There have been over 20 genetics modification associated with AMD but there is no single gene that “causes AMD in all cases.” The genes most highly associated with AMD are found in the complement system, an important system related to controlling the inflammation in our body. A change in the complement factor H (CFH) gene from a low risk gene to a high risk gene has been associated with 43% of those developing AMD.

However, some people who have this high risk CFH gene but never develop AMD. This leads us to believe that the genetics are not the entire answer. The other factor has to do with the environment. Smoking is the leading risk factor, along with aging, exposure to sunlight and higher body mass index (obesity). But again there are obese people that smoke and never develop AMD. So, while the environmental risk factors are important, they do not answer the entire question of “why do some people get AMD but others do not?”

Recently, researchers have recognized that a major factor in the dry form of AMD is that the retinal cells begin to die off. Therefore, they have looked at important factors that keep cells alive. The mitochondria are one of the most important elements that protect the cells in the body. These subunits or organelles, produce energy for the cells, acting like batteries for the cells. And just like the batteries in a flashlight – if the batteries are not working then the flashlight dies. The same thing happens with cells – when the mitochondria are not healthy, then the cells eventually will die. Therefore to protect ourselves, it is important to keep the mitochondria healthy. One way to do this is to eat healthy foods. Over the past 20 years, the National Eye Institute (NEI) has conducted a series of studies that have identified foods and supplements that are good for the retinal cells and also the mitochondria.

 

super greens, spinachThe National Eye Institute has recommended that people who are high-risk for developing AMD eat diets rich in green leafy vegetables, whole fruits, any type of nuts and omega 3 fatty acids. Many of these foods have anti-oxidant properties that help to “turn off” genes involved with inflammation, an important factor of retinal diseases. Salmon, mackerel and sardines have the highest levels of omega-3 fatty acids. An analysis that combined the data from 9 different studies showed that fish intake at least twice a week was associated with reduced risk of early and late AMD. Other studies show that Omega-3 fatty acids improve mitochondrial function, decreases production of reactive oxygen species (free radicals that damage cells) and leads to less fat accumulation in the body. The green leafy vegetables contain important protective macular pigments (carotenoids) called lutein and zeaxanthin that reduce the risk of AMD by 43%. High levels of lipid or fat deposits in the body (obesity) can “soak-up” the lutein and zeaxanthin so that they are not available to protect the retina.

The goal is to increase the omega-3 fatty acid and carotenoid levels to protect the eye. Below is a list of foods that are eye healthy:

Foods that have lutein or zeaxanthin:

– 6mg/d of lutein and zeaxanthin – decreased

– Lutein/zeaxanthin content – ug/100g wet weight

– Kale, cooked – 15,798

– Spinach, raw – 11,935

– Spinach, cooked – 7,053

– Lettuce, raw – 2,635

– Broccoli, cooked – 2,226

– Green peas, cooked – 1350

Source: Johnson, et al 2005 Nutr Rev 63:9

 

To help kickstart an eye healthy diet, here is a list of “eye-healthy recipes” that provide nutritional support for the mitochondria and retinal cells.

Asparagus Soup
Kale Chips
Quinoa Collard Green Wraps with Summer Vegetables
Smoked Salmon Rillettes

Sources:
Geoffrey K. Broadhead, John R. Grigg, Andrew A. Chang, and Peter McCluskey Nutrition Reviews. Dietary modification and supplementation for the treatment of age-related macular degeneration VR Vol. 73(7):448–462

Chong et al., Dietary omega-3 fatty acid and fish intake in the primary prevention of age-related macular degeneration: a systematic review and meta-analysis. Arch Ophthalmol 2008;126:826–33.

5/19/16

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