What is Lutein? Read this article to quickly understand and further choose the product that suits you!
What is Lutein? Read this article to quickly understand and further choose the product that suits you!
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What is Lutein? Read this article to quickly understand and further choose the product that suits you!
Lutein is a powerful antioxidant that exists in nature and often coexists with zeaxanthin. It can filter out harmful light such as blue light, thereby achieving the effect of protecting the eyes.
What is Lutein?
Lutein is one of more than 600 natural carotenoids and is a photosynthetic pigment. It is mainly found in green leafy vegetables such as spinach and cabbage. However, the human body cannot synthesize lutein on its own and must be obtained from the diet.
Lutein can effectively filter harmful blue light. Studies have shown that lutein can protect the retina and macula. It has the ability to absorb strong light and reduce damage to the eyes. In addition, its antioxidant power can reduce the generation of free radicals and further protect the eyes.
Since the human body cannot produce lutein on its own, lutein can be taken through diet or nutritional supplements. Common foods rich in lutein include spinach, broccoli, cabbage, dark green leafy vegetables, corn and egg yolks.
Lutein content in various foods
| Food | Lutein content (mg/100g) |
|-------------|----------------------|
| Spinach | 12.6 |
| Lettuce | 3.8 |
| Sweet potato leaves | 2.6 |
| Cabbage | 2.4 |
| Pumpkin | 1.5 |
| Broccoli | 1.4 |
| Corn | 1 |
| Eggs | 0.35<a href=https://healthynature.tw/%E8%91%89%E9%BB%83%E7%B4%A0%E7%9A%84%E7%94%A8%E9%80%94%E5%8A%9F%E6%95%88>When to take lutein</a> |
Two Types of Lutein
There are two common forms of lutein: "esterified lutein" and "free lutein".
#Esterified Lutein
Esterified lutein is a larger molecule that contains fat components and needs to be broken down by digestive tract enzymes before it can be absorbed into the body. Therefore, people with poor digestion ability are not recommended to consume this type of lutein.
#Free Lutein
The free lutein is hydrolyzed to remove fatty acids, and its molecular weight is only half of that of the esterified type, so it can be directly absorbed and utilized by the human body. Studies have shown that <a href=https://lifenutrients.tw/lutein>lutein</a>, the absorption rate of free lutein is better, and its bioavailability is 5 times that of the esterified type. Medical journals have also confirmed that free lutein can enhance eye absorption and increase lutein concentration.
| Item | Free Lutein | Esterified Lutein |
|-------------|---------------------------|----------------------|
| Molecular size | Small, easily absorbed | Large, not easily absorbed |
| Absorption method | Can be directly absorbed | Requires digestive tract decomposition |
| Bioavailability | High <a href=https://healthport.tw>When to take lutein</a> | Low |
| Raw material price | High | Low |
| Clinical research | Significant clinical evidence | Not yet fully clinically validated |
| Suitable for all groups | Not recommended for people with poor digestion |
Benefits of Lutein
There are many discussions on the internet about the brands and benefits of lutein. The following are the benefits of lutein that are supported by research evidence:
<a href=https://lifenutrients.tw/lutein>Lutein</a>- Improves the eyes’ ability to adapt to dim light
- Filter harmful blue light
- Improve visual adaptation (such as glare)
- Improve visual recognition
- Prevent macular degeneration
- Reduce the risk of cataracts
- Relieve eye fatigue
- Prevent sequelae of high myopia
- Reduce the risk of glaucoma
Who should take lutein supplements and what is the recommended intake?
As modern people are often exposed to 3C products such as computers, mobile phones and televisions, it is recommended that general office workers, students and the elderly should supplement lutein appropriately. Pregnant women should also supplement lutein in moderation to help the eye development of the fetus.
According to medical and ophthalmological research, the recommended daily intake of lutein for adults is 10 mg, and the recommended daily intake for children aged 6 to 12 is 3 to 6 mg.
Five rules for choosing lutein products
1. **Choose free lutein**: Because of its high absorption rate, it is suitable for all people.
2. **Combination is better**: It is best to use it with ingredients such as lutein. The recommended ratio of lutein to lutein is 10:2.
3. **Choose a brand that has original lutein dosage testing**: to ensure product quality.
4. **Capsule form priority**: avoid unnecessary chemical additives.
5. **Identify products with original trademark authorization**: Make sure you buy authentic products.
This guide is designed to help you better understand <a href=https://lifenutrients.tw/lutein>Lutein Recommendations</a> lutein and choose the lutein product that best suits you, so you can eat with more peace of mind!