1. What is DHA?
The scientific name of DHA powder is "docosahexaenoic acid", which is a polyunsaturated fatty acid with 6 double bonds, belonging to one kind of omega-3 fatty acid. Simply put, it is a kind of fat, but the human body is almost impossible to synthesize, in various studies, the highest conversion ratio is less than 1.5%, and the lowest can not even be found.
Due to the biggest feature of the DHA molecule in its spatial structure, it has a long carbon chain and many double bonds, which can be used to make all kinds of "membrane" raw materials in the body, such as neuron cell membranes, synaptic vesicles in neurons and retina, etc. Therefore, DHA has a close relationship with the brain nerve and vision development, and the lack of which will affect the development of organs. If DHA is deficient, it will affect the development of organs and produce a series of negative effects, such as affecting the normal work of the nervous system, memory function, and even mental state.
Simply put:
Because its structural characteristics are the reason why it becomes so important, the synthetic characteristics of DHA determine that it needs additional supplementation.
2. What is the use of DHA powder?
DHA research from polyunsaturated fatty acids to say.
Since the beginning of the 20th century, the incidence of cardiovascular disease in Europe and the United States is strangely high, which may have a lot to do with the structure of the fat in the diet. 1956 initiated a global survey of diseases, which found that the Eskimos ingested a large number of marine lipids after the body of this population contains a large number of omega-3 polyunsaturated fatty acids should be related to their long-term consumption of marine fish and other sea animals.
Omega-3 polyunsaturated fatty acids are a large family, is DHA and EPA: EPA's main role is anti-inflammatory, and lipid-lowering; DHA is an important nutrient that can help the baby's brain development, but it and phospholipids, not only build up the "shell" of the brain cells (the cell membrane), but also promote the growth of the neuronal protrusions. DHA is also a component of the retina, which promotes the growth of retinal cells.
So if you want your child to be "smarter" and have a better memory, eating foods rich in omega-3 fatty acids (DHA) may help.
◆For infants and young children:
For example, a report published in 2000 by the American Society for Clinical Nutrition found that DHA deficiency was common in children with "ADHD. The percentage of omega-3 fatty acids, including DHA, in plasma phospholipids and red blood cells was significantly lower in adults with ADHD than in controls.
But it doesn't mean that DHA will alleviate ADHD. It's a case of "if it's missing, it's there" rather than "if it's supplemented, it's not there" logic, so it's important to be clear about that.
In 1992, a study on fatty acid concentration in brain tissue of dead infants found that the concentration of DHA in brain tissue increased linearly from late pregnancy to the age of 2 years, which is the critical period for rapid central nervous system development of fetal infants, suggesting that DHA may have important significance for the development of neural function of fetal infants.
3. Why do I need to take extra supplements?
Because different dietary habits will lead to different intakes, a dietary survey found that the average intake of DHA in Chinese pregnant women is 11.83~55.30 mg/d, and the intake in inland areas is significantly lower than that in rivers lakes, and coastal areas. A follow-up article will share that pregnant women need 200mg DHA per day.
A study on the fatty acid composition of mature milk in 2011 suggested that the DHA content per 100 g of fatty acid in breast milk in coastal, river lake, and inland areas were 0.47 g, 0.4 lg, and 0.24 g, respectively, and inland areas were significantly lower than river and lake and coastal areas. It can be seen that the DHA intake level and breast milk DHA content in China show obvious regional differences.
From the study, it is indicated that the daily DHA intake of both pregnant breastfeeding mothers and infants is not enough to meet their daily needs.
According to the recommendations of our experts, the FAO Expert Committee and the Expert Committee of the International Society of Perinatal Medicine, the daily intake of DHA for pregnant women and lactating mothers is not sufficient to meet their daily needs:
Daily intake of DHA for pregnant women and lactating mothers should not be less than 200mg.
Daily intake of DHA for infants and young children should not be less than 100mg.
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