International research results of lutein

Several studies have shown that high doses of lutein through food intake can maintain eye health and prevent macular disease and cataract deterioration in the elderly But one thing is very important Many vegetables and fruits containing lutein also contain many other nutrients We don't know whether it's just the contribution of lutein or other nutrients that are involved in eye protection The interaction of various nutrients can also produce a certain therapeutic effect In 1994, the Journal of the American Medical Association published an observation study involving 900 elderly people (including patients and healthy volunteers) to study the relationship between maculopathy and intake of carotenoids, vitamins A, C, e, etc Studies have shown that the highest intake of carotene is 43% lower than the lowest intake of carotene Since spinach and Kale (containing a large amount of carotene) have been observed to play the largest protective role in the prevention of disease, the researchers believe that carotene and zeaxanthin play the main role Another study, published in the British Medical Journal in 1992, suggested a possible link between lutein and carotenoids The purpose of the study was to observe the relationship between cataract and intake of carotenoids, vitamins A, C, D and riboflavin and cataract They used questionnaires to study the eating habits of 50000 nurses over the age of 45 for eight years The results showed that the people who took the most vitamin A and carotenoids had a lower risk of cataract Similarly, spinach plays an important role in the prevention of cataracts The results show that carotenoids in food can reduce the probability of cataracts Lutein can also prevent colorectal cancer, according to a study published in the American Journal of clinical nutrition in 2000 This study mainly looked at the relationship between colorectal cancer and food intake, including lutein and other carotenoids, such as α - carotene, β - carotene, lycopene, zeaxanthin, β - cryptoxanthin, etc The researchers looked at the eating habits of 4000 subjects, half of whom had colorectal cancer between the ages of 30 and 79, and the rest of the healthy subjects were included in the control group Studies have shown that people who consume large amounts of lutein are less likely to have colorectal cancer, and more interestingly, in this study, only lutein was identified as a component that may have a protective effect Researchers from the University of Southern California and the University of California, Los Angeles, conducted a four week animal experiment in which some rodents ate foods that contained large amounts of lutein Because of the deletion of the gene, these mice have a tendency to develop atherosclerosis At the end of the study, it was observed that mice with large amount of lutein intake had less clots in the artery than those without lutein intake This experiment shows that lutein can prevent arteriosclerosis The experimental results were published at the federal of American Societies for Experimental Biology conference in 1999 A human experiment has also indirectly shown that lutein and other carotenoids can prevent cardiovascular disease In 1996, researchers from the University of Cambridge published a paper pointing out that after observing the blood lutein and carotenoid levels of patients with different heart diseases in Toulouse, France, and Belfast, Ireland, the results showed that the subjects in Toulouse had less heart disease, and their blood lutein levels were 2% of those in Belfast The latter has more serious cardiovascular disease, while the blood of Toulouse subjects also contains a lot of other carotenoids.