The first point is whether the ingredients are extracted from nature and whether they have been taken by people who have undergone clinical trials (most chemical ingredients cannot be used for a long time). Lutein can be eaten for a long time, and its natural components and clinical verification have no side effects. A large number of scientific reports have confirmed that lutein has a special effect on eyes, and no side effects have been reported in clinical application for more than ten years.
The second point is to see whether the preparation method of the product is suitable for long-term use. As we all know, the product of capsule preparation has the problem of heavy metal content in capsule shell. Although the state has strict regulations on the content of heavy metals in capsule shell, it still contains some heavy metals. Long-term use of capsule drugs will cause heavy metal deposition in liver and kidney and cause certain physical discomfort.
Therefore, if you take capsule lutein products, it is recommended not to exceed half a year, or you can directly choose lutein products for tabletting candy preparations. Chewable tablets can well avoid the problem of heavy metals.
Therefore, although lutein can protect eyesight well, any health care products should be taken in moderation. I hope everyone will pay attention to it and take care of their health.
What is the function of lutein? When ultraviolet and blue light from the sun enter the eyes, it will produce a lot of free radicals, which will cause eye degeneration. Ultraviolet rays can generally be filtered out by cornea and lens, but blue light can reach retina and macula through eyeball, and lutein in lens and macula can filter out blue light to avoid the harm of blue light to eyes. Lutein and zeaxanthin can absorb blue light and resist oxidation. Simply put, lutein/zeaxanthin is like natural sunglasses, which can resist the damage of sunlight.
3 How to eat lutein lutein tends to be oil soluble. It is recommended to use it after meals for better absorption. If you usually take vitamin E or fish oil, you can take it together.
4 what should I pay attention to when eating lutein 1? Lutein and zein should not be used with β-carotene:
According to pharmacokinetics, β -carotene and lutein compete with each other in absorption, which means that a large dose of β -carotene will reduce the absorption of lutein. However, vitamin A will not affect the absorption of lutein.
2. Lutein dose conversion:
If each tablet on the product label contains "lutein 5% 30mg" and the actual pure lutein content is only 30 * 5% = 1.5mg, consumers are advised to "calculate" clearly when purchasing lutein products.
3.AREDS and AREDS-2 formula:
Some products will be marked with AREDS formula, "ARDS" = age-related eye disease research (the US government sponsored a large-scale degenerative eye disease research, and discussed the influence of taking some nutritional supplements on degenerative eye diseases. AREDS-2 is an upgraded formula. Lutein+Zeaxanthin +Omega-3(DHA+EPA) was used to replace β -carotene in the original prescription.
4. Suitable antioxidants:
Although lutein and zeaxanthin are strong antioxidants, sometimes lutein/zeaxanthin is easily oxidized in the presence of other oxidants, so it is best to put antioxidants in the formula of lutein/zeaxanthin.
5. Different nationalities eat different doses and formulas:
Adult health care, taking lutein 6 mg every day; It is recommended that diabetic patients take 30 mg daily to prevent macular degeneration. According to different nationalities, the demand for its supplementary ingredients is different. For example, diabetic patients have fragile blood vessels, and auxiliary ingredients can be selected to contain blueberry, mulberry, yeast selenium, blueberry and so on. For patients with night blindness, vitamin A and mountain Sang Zi are good choices; For myopia, there is not enough evidence to explain which formula is better, but mulberry and blackcurrant can be considered (there is only animal experimental evidence at present); People with three high symptoms can consider the newer astaxanthin, which has anti-inflammatory effect and helps to control blood lipids.
6. For smokers, don't choose an eye care formula with high dose of beta carotene different from the formula:
If clinical trials confirm that long-term use of β-carotene, smoking or secondhand smoke may lead to lung cancer.