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PolyUnsaturated Fatty AcidS

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17y ago

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Which vitamin protects PUFA in the cell from free radical attack?

Vitamin E is known to protect polyunsaturated fatty acids (PUFAs) in the cell from free radical attack. It acts as an antioxidant, neutralizing free radicals that would otherwise cause damage to the PUFAs.


What are the functions of polyunsaturated fatty acids?

Polyunsaturated fatty acids (PUFAs) are found mostly in plant-based foods. PUFAs help your body to maintain the membranes of all cells, and they help it to make prostaglandins, which regulate many body processes, including inflammation and blood clotting. Eating foods rich in PUFAs improves blood cholesterol levels, which can decrease your risk of heart disease. PUFAs may also help decrease your risk of type 2 diabetes.


What is Omega3?

Omega 3 is the name of a type of fat that is found in oil-rich fish and some plant oils and is also known as 'n-3'. They are from the family of 'good' fats - polyunsaturated fatty acids (PUFAs) that are not only beneficial for health but are essential in the diet. Omega 3 also benefits you to a healthier and more active brain.


Formula for fat?

Depends which fat, there are many different compounds that are considered fatty acids. All contain an even number of carbons and a carboxyllic acid terminus. There are also 3 categories for these fats, saturated fatty acids, MUFAs (mono-unsaturated fatty acids), and PUFAs (poly-unsaturated fatty acids). A small 16-chain fatty acid which is completely saturated would look like this: CH3(CH2)14COOH Or C16H32O2


What are healthy fat?

"Healthy" fats are the fats that your body needs to survive and to function properly. They include monounsaturated fats, such as that found in olives, as well as certain polyunsaturated fats, such as that found in sunflower seeds.Eating healthy fats lowers the risks of cardiovascular disease, cancer and Diabetes, and improves your chances of living a healthful life. It's best to consume healthy fat in its natural form: raw nuts, avocado, olives, raw seeds, or fresh coconut. Refining fats by turning them into oils, greatly reduces their health-promoting qualities and vastly increases their calorie density. It's easier to drizzle too much olive oil over a salad than it is to eat the olives whole. Pure nut butters are good, but they are high in calories. Oils, when heated, form free radicals that can damage to the cells in our bodies, causing premature aging and irregular cell growth.The two main types of helpful dietary fat are:Monounsaturated fatty acids (MUFAs), which are in a variety of foods. Monounsaturated fats have one carbon atom double-bonded to hydrogen atoms, and polyunsaturated fats have many carbon atoms double-bonded, so their molecules have relatively fewer hydrogen atoms than a saturated fatty acid of the same length. Eating foods rich in MUFAs improves blood cholesterol levels, which can decrease your risk of Heart disease. MUFAs may also benefit insulin levels and blood sugar control, which can be especially helpful if you have type 2 diabetes. Healthy sources of monosaturated fat include avocados, nuts, and seeds.Polyunsaturated fatty acids (PUFAs), which are found mostly in plant-based foods. PUFAs help your body to maintain the membranes of all cells, and they help it to make prostaglandins, which regulate many body processes, including inflammation and blood clotting. Eating foods rich in PUFAs improves blood cholesterol levels, which can decrease your risk of heart disease. PUFAs may also help decrease the risk of type 2 diabetes. Depending on the location of the double-bond in the fatty acid chain, PUFAs can be classified as omega-3 or omega-6 fatty acids.Most fatty acids are non-essential, meaning that your body can produce them as needed, generally from other fatty acids. However, your body cannot make at least two PUFAs: linoleic acid, an omega-6 fatty acid, and alpha-linolenic acid, an omega-3 fatty acid found in plants. These are called essential fatty acids and you must include them in your diet. Omega-6 fatty acids, including linoleic acid, which your body converts into gamma linolenic acid (GLA), provide another natural defense against such diseases as cancer, rheumatoid Arthritis, eczema, psoriasis, diabetic neuropathy and premenstrual syndrome (PMS). Omega-3 fatty acids may decrease the risk of coronary artery disease, protect against irregular heartbeats, and help lower blood pressure levels. Alpha-linolenic acid (ALA) is a short-chain omega-3 fatty acid, which is found in many vegetables, beans, nuts, seeds, and fruits. There are relatively large amounts in soy, walnuts, flaxseeds, hemp seeds, pumkin seeds, sesame seeds, mustard seeds, and chia seeds. Brazil nuts and wheat germ also contain significant amounts. It's also found in green leafy vegetables, grains, and spirulina. Your body cannot make its own ALA, so you need to eat some of these foods each day. Your body can convert ALA to EPA (eiocosapentaenoic acid) and DHA (docosahexaenoic acid). Eicosapentaenoic acid (EPA) is found in very small amounts in microalgae, leafy greens, cruciferous vegetables, and walnuts. EPA lowers your risk of cardiovascular disease. Some EPA is converted into series 3 eicosanoids which can reduce blood clotting, inflammation, blood pressure, and cholesterol. Your body can produce EPA out of ALA and out of DHA. Docosahexaenoic acid (DHA) is found in very small amounts in spirulina, leafy greens, cruciferous vegetables, and walnuts. It is a major component of the gray matter of the brain, and also found in the retina, testes, sperm, and cell membranes. DHA is important for proper nerve and brain development and function. Your body can convert EPA into DHA; however, a high intake of linoleic acid may suppress your body's ability to convert alpha-linolenic acid to DHA. Avoid refined oils, especially sunflower, safflower, and corn oil, and use tiny amounts of oils containing alpha-linolenic acid such as soy and walnut oils, which will assist your body in making more DHA.


Can you get essential Omega-3 fatty acids from something other than fish oil?

Yes, you can get all the essential fatty acids from non-fish sources, even vegan sources. However, it isn't necessarily the easiest or most commonly-recommended way to get it. The two Omega-3 fatty acids in question are DHA and EPA. Alpha-linolenic acid (ALA) is another important Omega-3 but it's easy to get from vegetable oils. DHA and EPA are not so easy to get. Your body can make DHA and EPA from alpha-linolenic acid, but not efficiently. This is why many experts recommend fish oil. But the Vegan Society says: "Many factors affect the rate of conversion and one factor seems to be a high food intake of linoleic acid which is typical of vegan diets and may suppress the body's ability to convert alpha-linolenic acid to DHA. Vegans can achieve a better balance of PUFAs in their body tissues by using less sunflower, safflower and corn oils and more oils containing alpha-linoleic acid such as rapeseed (canola) oil, or soya bean and walnut oils. This would encourage their tissues to make more DHA."


How do people use protists for in their everyday lives?

People use protists for various purposes in everyday life, such as in the production of food like bread, yogurt, and beer. Some protists are also used in research for studying genetics and disease. Additionally, certain protists are used in wastewater treatment to help break down organic matter.


What is the primary reason that monounsaturated fats are recommended over polyunsaturated fats?

The latest clinical studies, one involving over >340,000 people in NA and Eurpore indicate a combination of mostly monounsaturated, and some polyunsaturated fats is best. Monounsaturated fats are more stable for cooking (olive oil) and should represent about 90% of your fat intake. Polyunsatruated fats substantially reduce heart disease risks, but should be relatively fresh to prevent a speculated increased risk of cancer. A very small handfull of walnuts, sunflower seeds or pumpkin seeds per day can meet the 5% intake.Source: http://www.bidmc.org/YourHealth/HealthResearchJournals.aspx?ChunkID=487731"Researchers combined data from 11 American and European cohort studies in which a total of 344,696 participants free of known heart disease were followed for a period of 4-10 years. During that time, 5,249 participants had a coronary event (eg, heart attack) and 2,155 died from heart disease.Participants lowered their consumption of saturated fats by 5% and replaced these lost calories with either PUFAs, MUFAs, or carbohydrates. The rates of coronary events and deaths in each group at the end of the follow-up period were:PUFAs: 13% decrease in coronary events, 26% decrease in coronary deathsMUFAs: no association with coronary heart disease was notedCarbohydrates: 7% increased risk in coronary events, no significant change in risk for coronary deaths"say what?


Are foods high in saturated fat healthy for you?

ANSWERThe guy answered before me was an idiot. Saturated fat does not do you harm. Although researchers have tried to prove that saturated fat is bad for you, they have failed time after time. Which isn't to say saturated fat is good for you. If you want fat that is good for you, try monounsaturated fat found in olive oil.