High iodine and high calcium is not necessary red skin and white skin almost recently, the market appeared a lot of functional diversity of "special eggs", such as "low cholesterol eggs", "high iodine eggs", "High calcium eggs", "high zinc eggs", etc., so that consumers are dazzled, do not know which to pick. There are so many types of eggs, is there any difference in nutrition? Folk rumors of the deeper the color of the yolk, the higher the nutrition, wood eggs than ordinary eggs, in the end there is no reason? Can lower cholesterol calcium effect is not good many people know that the egg is extremely nutritious, but the yolk contains more cholesterol, so that the elderly suffering from cardiovascular disease eat up fear. If there is really "low cholesterol eggs", you do not have to worry about this. This sounds a bit unbelievable, but in fact, it can be done. Because the composition of the egg is greatly influenced by the feed, through the improvement of the feed formula, can effectively increase the content of minerals in the yolk, or reduce the cholesterol. For example, increasing selenium in the feed can produce selenium-enriched eggs, which is conducive to the prevention of cardiovascular disease in the elderly; increasing zinc can help prevent zinc deficiency in children and the elderly, which is beneficial to improving immunity and eyesight. Therefore, "low cholesterol eggs" and "high zinc eggs" are both very meaningful health foods. However, "eggs high in iodine" and "eggs high in calcium" are not of great significance in the diet. Because China has already implemented iodine-fortified salt, enough to meet the needs of the human body, by eating eggs to supplement iodine will not produce significant results. The best dietary sources of calcium are milk and tofu, not eggs. Even if you eat 2 eggs a day, which contains calcium is only about 60 milligrams, and the human body should consume 800 milligrams of calcium per day, these amounts are really minimal. Diesel eggs are not highly nutritious Many consumers believe that diesel eggs are flavorful and have a higher nutritional value. It is true that free-range woodchucks can eat grass, bugs and other natural foods, so the eggs taste better. However, when it comes to nutrition, it is still the regular eggs from chicken farms that are richer. Experiments have shown that the fat and cholesterol content of wood eggs is slightly higher than that of ordinary eggs, especially the content of phospholipids and omega-3 unsaturated fatty acids, which is higher than that of ordinary eggs. However, the yolks of ordinary eggs contain higher levels of iron, calcium, magnesium, selenium and other mineral elements than that of Chai Eggs. In recent years, many chicken farms have adopted scientific formulas for their feeds, such as the addition of flaxseed oil and fish meal, which can also lead to a significant increase in the content of omega-3 unsaturated fatty acids in ordinary eggs. Therefore, in a comprehensive comparison, wood eggs are rather less nutritious than ordinary eggs. Red-skinned eggs are more resistant to storage Some people care a lot about its color when picking eggs. For example, the idea that a darker yolk is more nutritious than a lighter one, or that a red-skinned egg is better than a white-skinned one, does not have much scientific merit. The color of the yolk depends mainly on the amount of vitamins in it. Free-range chickens eat more green leaves, resulting in an increase in vitamin B2 and carotenoids in the yolk, which makes it look darker. Although the yolks of ordinary eggs are lighter in color, most chicken farms nowadays add vitamin A to their feed, so the yolks are slightly higher in vitamin content compared to wood eggs. The nutritional value of red and white eggs is roughly the same. The former has a slightly higher fat content, while the latter has a slightly higher protein and vitamin A content. In comparison, the only advantage of red-skinned eggs is that the shell is thicker and more resistant to storage. Since the nutrition is similar, why are branded eggs and wood eggs on the market now costing more? This has to do with their lower production, consumers do not need to choose eggs on the brain, there is no need to buy expensive, ordinary eggs can ensure that the usual nutritional needs. Likes