Fish oil DHA? Seaweed oil DHA?
Studies have found that marine fish are rich in DHA. However, the US Food and Drug Administration (FDA) reminded pregnant women to be alert to excessive mercury in seawater. However, the British environmental science magazine Photochemical Layer published a report saying that organochlorine pollution, dioxins and toxaphene were found in 44 brands of fish oil from 15 countries.
Why do deep-sea fish contain a lot of DHA? This is because the DHA accumulated in fish comes from their food-deep-sea algae.
However, deep-sea algae are at the forefront of the food chain of deep-sea fish, and DHA synthesized by photosynthesis itself does not pass through the food chain, so there is no risk of food chain pollution.
About environmental protection bureau
200 1 FDA and Food Standards Committee in 2004 both found that the existence of EPA may affect the absorption of ARA, thus hindering the growth of infants. Many studies on fatty acids in breast milk also found that the EPA content in breast milk is very small, DHA:EPA >；; 8: 1, not any other ratio. However, fish oil contains a large amount of EPA, which cannot be completely separated by current technology.
About the fishy smell
Fish oil DHA will produce fishy smell because of inevitable oxidation during refining.
There is no oxidation in the refining process of seaweed oil DHA, so it will not produce fishy smell.
About potassium sorbate preservative
The FDA has approved that preservatives such as potassium sorbate can be added to baby food.
Regarding whether or not to supplement DHA, how much DHA should be added?
March of the Times, a non-profit public welfare organization founded by former US President Franklin on 1938, found that pregnant women should supplement DHA at least 200mg every day.
The World Health Organization (WHO) formally recommended DHA supplementation in the early growth and development of infants at the meeting held in Rome on 1993. Especially premature infants, DHA should be supplemented as soon as possible.
1994, FAO and the World Health Organization (FAO/ WHO) formulated the recommended dietary amount of DHA in their joint expert report "Fats, Oils and Human Nutrition", that is, "the full-term baby weighs 20mg per kilogram per day; Premature infants weigh 40mg per kg per day; Healthy adults consume 220 mg of DHA every day. "
So what is the main function of DHA? Let's take a look together!
DHA is currently recognized as a brain-nourishing nutrient and an important nutrient for teenagers to improve their intelligence, memory and learning ability.
1. Promote the development of cranial nerves
DHA is one of the essential substances for brain growth and development. DHA accounts for about 25% of the fat content in brain tissue, which contributes to the structural integrity and function of the brain. Through special training such as early education, more synapses of brain neurons can be stimulated, so giving children a proper amount of DHA can promote the development of children's brain nerves and help improve their memory.
2. It is beneficial to children's retinal health.
DHA is an essential component of retinal photoreceptor nerve, and its content is as high as 50% in optic nerve cells and retinal tissues, which has a good protective effect on retina. When DHA is lacking in retinal cells, it will weaken the photosensitivity of the optic nerve system and reduce the visual ability, thus affecting the further development of the baby's brain. If enough DHA is supplemented every day, the damage to the retina will be minimized, which is beneficial to the health of the retina.