Madeleine Hull
Lutein is a plant-based nutrient, often referred to as the eye vitamin, that is important for eye health. It is a yellow xanthophyll carotenoid found in egg yolks and many colourful fruits and vegetables. Lutein is also available in supplement form, but it is possible to consume enough of it through diet alone. This paragraph will explore some of the foods that can be added to your diet to increase your lutein intake.
| Characteristics | Values |
|---|---|
| Why add lutein to your diet? | Lutein is a plant-based nutrient that is important for eye health. It is thought to function as a light filter that protects eye tissues from sunlight damage. It can also help prevent cataracts and macular degeneration. |
| How much lutein do people typically consume? | Americans consume an average of 1-2 mg of lutein per day. However, most health benefits have been observed at 6 mg per day. |
| Foods high in lutein | Spinach, kale, corn, orange peppers, kiwi fruit, grapes, zucchini, squash, broccoli, green beans, parsley, carrots, sweet potatoes, romaine lettuce, pistachios, and egg yolks. |
| Lutein supplements | Lutein supplements are generally regarded as safe by the FDA. Most supplements contain 20 mg or more of lutein. |
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What You'll Learn
Leafy greens like spinach, kale, and broccoli
Leafy greens such as spinach, kale, and broccoli are excellent sources of lutein, a plant-based nutrient often referred to as the "eye vitamin." Lutein is a powerful antioxidant carotenoid that promotes eye health by protecting eye tissues from sunlight damage and reducing the risk of cataracts and macular degeneration. It also offers anti-inflammatory benefits, improved cognitive functioning, lower cancer risks, and improved cardiovascular health.
Spinach is an exceptional source of lutein, with one cup of raw spinach containing 8 milligrams of lutein. Interestingly, cooking spinach increases its lutein content, with the same serving of cooked spinach providing up to 16 milligrams. Spinach is also a good source of iron, magnesium, and vitamin K.
Kale is another nutrient-dense leafy green that provides more lutein than carrots. While the exact amount of lutein in kale may vary, it is generally considered a rich source of this antioxidant. Broccoli, a versatile vegetable, also contributes to your lutein intake. Adding a half-cup of broccoli to your meals can boost your lutein intake by 1 to 2 milligrams.
Incorporating these leafy greens into your diet can be easy and delicious. Try adding raw spinach to salads or sandwiches, or sautéing it as a side dish. Kale can be massaged and used as a base for salads, blended into smoothies, or baked into crispy kale chips. Broccoli can be enjoyed steamed, roasted, or even raw with a dip.
While these leafy greens are excellent sources of lutein, it is worth noting that the average diet tends to contain low amounts of lutein, and supplementation may be beneficial to ensure adequate intake. Lutein supplements are generally regarded as safe, but it is always a good idea to consult with a healthcare professional before starting any new supplement regimen.
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Nuts, especially pistachios
Nuts are a great source of lutein, a plant-based nutrient best known for its importance in maintaining eye health. Lutein is a carotenoid, a compound that gives plants their colour, and is found mainly in yellow and green fruits and vegetables. It is also available as a supplement, with studies showing it to be as effective as dietary sources.
Pistachios, in particular, are a fantastic source of lutein, with 1.4 milligrams per ounce, which is about thirteen times more than the next highest nut type, hazelnuts. They are also a great weight-loss-friendly food, as they are lower in fat and calories than many other nuts. Pistachios are also rich in essential amino acids, which must be obtained through diet because your body cannot produce them.
In addition to their high lutein content, pistachios offer numerous other health benefits. They are a good source of healthy fats, protein, fibre, and antioxidants. They can also help lower blood pressure and cholesterol.
When adding more pistachios to your diet, it is important to watch your portions due to their high-calorie content. Roasted pistachios, for example, are a great snack, but they are often salted, and too much sodium can have negative effects on overall health.
If you are looking to increase your lutein intake, pistachios are a great choice, providing a tasty and nutritious way to improve your eye health and potentially reduce the risk of age-related vision loss and cataracts.
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Eggs
Studies have shown that consuming one egg per day for five weeks significantly increases serum lutein concentrations in older adults without altering serum lipid and lipoprotein cholesterol concentrations. This is important because lutein plays a crucial role in vision health, and low lutein intake is implicated as a risk factor in age-related macular degeneration, the leading cause of vision loss among older individuals. By consuming eggs, you can help prevent this condition and maintain your central vision, which is essential for activities like reading and driving.
Additionally, lutein has been found to have benefits beyond eye health. Research has shown that lutein may improve cognitive performance, especially in older adults. A clinical trial from 2008 found that adults aged 60-80 who were supplemented with lutein showed improved cognitive performance by the end of the trial. Analysis of post-mortem brain samples from older adults also revealed that lutein is the most predominant carotenoid in the brain, even though it is consumed less than other carotenoids. This suggests that the brain selectively takes up lutein from the diet for a specific purpose.
To incorporate more lutein into your diet through eggs, you can try eating one egg per day. This can be a convenient and tasty way to boost your lutein intake and promote both eye and brain health. However, it is important to note that consuming more than one egg per day may provide higher-than-recommended amounts of dietary cholesterol. As always, it is advisable to consult with a healthcare professional or nutritionist before making significant changes to your diet.
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Corn
In addition to its eye health benefits, lutein also provides protection for your skin from sun damage and may help improve the appearance of wrinkles. Lutein can also support healthy brain function, including memory, learning efficiency, and verbal fluency. While there is no set daily intake requirement for lutein, consuming about 6 milligrams per day is associated with health benefits.
To maximize the benefits of lutein-rich foods like corn, it is recommended to consume them with a source of healthy fat, such as olive oil, avocado, or nuts, as lutein is a fat-soluble nutrient. Additionally, if you find it challenging to obtain enough lutein from your diet alone, you may consider adding a lutein supplement. However, it is always advisable to consult with your healthcare provider before starting any new supplement.
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Supplements
Lutein is a plant-based nutrient important for eye health. It is a carotenoid with powerful antioxidant properties. Lutein is generally found in dark, leafy green vegetables and yellow-pigmented foods.
Lutein supplements are generally regarded as safe (GRAS) by the Food and Drug Administration (FDA). However, supplements are not regulated by the FDA, so it is important to do your research. Look for products that have been tested by a third party such as USP or NSF. Most supplements contain 20 mg or more, which is much higher than the amount needed to get the benefits of lutein. However, studies using doses from 10 to 40 mg per day have not found any adverse effects. Lutein is best absorbed when taken with a high-fat meal. Before adding lutein supplements to your diet, it is recommended that you consult your doctor.
A 2016 study reported eye crystals in an older woman with glaucoma who took 20 mg/day of lutein for eight years. The woman also had a high dietary intake of lutein. The European Food Safety Authority (ESFA) has approved 1 mg/kg body weight per day for lutein derived from marigold. The ESFA approved 0.75 mg/kg body weight per day for synthetic zeaxanthin.
A systematic risk assessment of lutein supplements used in placebo-controlled intervention trials was published in 2006. Based on this assessment, there is strong evidence that lutein is safe up to 20 mg/day. Doses of lutein ranged from 8 to 40 mg/day and study durations ranged from 7 days to 24 months. The AREDS2 trial reported no adverse effects from lutein and zeaxanthin supplementation (10 and 2 mg/day, respectively) over an average of 5 years in patients with intermediate AMD.
Free lutein is absorbed directly, whereas lutein esters require an additional ester-hydrolysis step in the small intestine. Supplements containing free lutein may increase the serum/plasma lutein response more than supplements containing lutein esters.
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Frequently asked questions
Lutein is often referred to as the "eye vitamin" as it is a key carotenoid in the human eye that protects against sunlight damage. It is also an antioxidant that reduces free radical damage and has anti-inflammatory properties. Lutein may also improve cognitive functioning, lower cancer risks, and improve cardiovascular health.
There is currently no recommended dietary intake for lutein. However, studies have shown that health benefits are associated with consuming about 6 milligrams a day. The average person gets about 1-2 milligrams daily from their diet alone.
Lutein is found in many fruits and vegetables, particularly those that are yellow, orange, or dark green. Some foods that are high in lutein include kale, spinach, corn, broccoli, green beans, bell peppers, parsley, pistachios, and egg yolks.
Lutein supplements are generally regarded as safe by the Food and Drug Administration (FDA). However, it is always a good idea to talk to your doctor before adding any new supplement to your diet.
Lutein supplements have very few reported side effects. Studies have shown that lutein is safe to consume at doses of up to 20 mg per day. However, more research is needed to evaluate the potential side effects of very high intakes.
