“Using this oil to help prevent disease†“This oil is closely related to the risk of diseaseâ€... We have a discussion about the relationship between fat and health in this oil. Of course, the relationship between edible oil and health depends mainly on fatty acids in edible oils. So what types of fatty acids are there and what are the different functions of different fatty acids?
Don't refuse fat! It's important for maintaining health
Oil and fat are the main sources of energy, and they often give people the impression that they tend to gain weight when they eat more food. Most women often pay attention to oil. However, fat is not only a source of energy, but also an important component of the cell membrane. It is a physiologically active substance that inhibits inflammation. It has a variety of important physiological functions and it is necessary to take appropriate amounts of it. Generally for adults, daily energy supply from fat should account for 25%-30% of total energy.
The functions of oils and fats vary according to the fatty acid composition they contain. Fatty acids are divided into saturated fatty acids and unsaturated fatty acids according to their chemical structures. Unsaturated fatty acids are further divided into monounsaturated fatty acids and polyunsaturated fatty acids. The human body cannot synthesize monounsaturated fatty acids and saturated fatty acids in the body. Animal fatty acids contained in meat and dairy products are used as energy sources. In addition, olive oil and coconut oil contain more fatty acids.
In addition, omega-6 fatty acids (n-6) in polyunsaturated fatty acids can not be synthesized in the body similarly to omega-3 fatty acids (n-3), and they are required to be taken from foods in order to maintain their health. fatty acid.
Omega 6 fatty acids are represented by docosahexaenoic acid, which is contained in edible oils. In the absence of such fatty acids, dryness of the skin, difficulty in forming sperm and other symptoms are lacking. Omega 3 fatty acids are contained in fish oil. EPA and DHA are representatives. It is considered to be closely related to the health of the brain and the eyes and helps prevent depression.
Prof. Kobayashi Kobayashi of Japan's Ochanomizu University explained that “essential fatty acids play an important role that cannot be replaced.†omega 6 fatty acids can cause inflammation and resist pathogenic bacteria; but omega 3 Fatty acid can inhibit this inflammation from continuing to deteriorate, because without the inflammatory response, the body cannot resist pathogens, but despite the continued development of inflammation, it may induce cancer or allergies.
According to the Japanese Ministry of Health, Labour and Welfare's 2015 Dietary Intake Standard, the joint intake of omega 6 fatty acids and omega 3 fatty acids helps to reduce the risk of myocardial infarction. If only omega 6 fatty acids are consumed, it may increase the risk. In other words, the balance between omega 6 and omega 3 fatty acids in the diet is important, and a 4:1 ratio is appropriate.
In general, saturated fatty acids that are considered to be unhealthy may increase the risk of myocardial infarction when intake is high, but it also reduces the risk of cerebral hemorrhage. In other words, too little saturated fatty acid intake can also cause health hazards. Professor Kawasaki of Showa Women's University in Japan pointed out: "If you reduce or even skip dairy products in order to reduce saturated fatty acids, it may lead to a decrease in protein intake. Protein plays an important role in preventing cerebral hemorrhage."
Can not simply eat only one kind of oil, fatty acid balance is very important
Not only fat, from a scientific point of view, it is not easy to study the health effects of nutrients contained in any kind of food. Food contains many ingredients, if you want to simply understand the effects of a specific nutrient on the human body difficult. Under normal circumstances, scientific experiments can only find that food containing certain ingredients has a certain tendency to affect the human body, but it cannot explain that certain nutrients will bring certain effects.
Recently, docosahexaenoic acid, which has been widely promoted to be beneficial to health, has also gone down to the altar. The Dietary Intake Standard Report states: "Excessive intake of docosahexaenoic acid may lead to an increased risk of breast cancer and myocardial infarction, which may be related to the prone to oxidative properties of docosahexaenoic acid and to inflammation. "Also, although the EPA and DHA in omega 3 are considered to prevent coronary artery disease and stroke, according to recent scientific studies, statistically speaking, the effect is weakened.
Many netizens will only eat one type of oil because of the popularity of “some kind of oil for health†on the Internet, but this kind of biased fatty acid intake will only harm health. It is necessary to comprehensively consider the nutrition that people need, and change their oil intake, together with other nutrients and ensure a balanced diet, in order to truly protect their health.
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