[新聞] 椰子油和牛油、奶油一樣不健康消失

看板Gossiping作者Zauber時間7年前 (2017/06/16 21:37)推噓6(6推 0噓 14→)

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BBC Coconut oil 'as unhealthy as beef fat and butter' http://www.bbc.com/news/health-40300145 常有人宣稱椰子油的脂肪酸較其他飽和脂肪酸有益，但美國心臟協會澄清椰子油不比牛油、奶油好到哪裡去，沒有有力研究支持其特別的健康觀點。飽和脂肪酸會增加血中低密度膽固醇的量造成動脈阻塞，而根據協會椰子油中有82%的飽和脂肪酸、奶油63%、牛油50% 、豬油39%。或許曾聽說椰子油的脂肪酸組成仍然使它成為較健康的選項，不過協會說還是沒有證據支持這看法。油脂對人體十分重要，惟正確的油脂攝取應建立在較少飽和脂肪酸上。可用較低飽和脂肪酸的植物油如橄欖油、葵花油等取代飲食中的動物脂肪，多避免油膩的烹調方式。英國公共衛生局建議一般男性一日飽和脂肪攝取應低於30克，女性則為20克。 Coconut oil is as unhealthy as beef dripping and butter, say US heart experts. It is packed with saturated fat which can raise "bad" cholesterol, says the American Heart Association in updated advice. Coconut oil is commonly sold as a health food and some claim the fat in it may be better for us than other saturated fats. The AHA, however, says there are no good studies to support this. Healthy myth? The advice around which fats to eat can be very confusing. Animal fats, such as lard, are generally seen as bad, while plant oils, such as olive and sunflower, are seen as healthier options. That theory is based on how much of one particular type of fat - saturated fat or "sat fat" - these products contain. Sat fat Saturated fat is said to be bad for our health, although not everyone agrees. Eating a diet high in saturated fat can raise the level of "bad" (LDL) cholesterol in the blood, which, in turn, may clog the arteries and increase the risk of heart disease and stroke. According to the AHA, 82% of the fat in coconut oil is saturated. That's more than in butter (63%), beef fat (50%) and pork lard (39%). And, like other saturated fats, studies show it can increase "bad" cholesterol. Some claim that the mixture of fats in coconut oil still make it a healthy option, but the AHA says there is no good-quality evidence for this. It says people should limit how much saturated fat they eat, replacing some of it with unsaturated vegetable oils - olive oil and sunflower oil, and their spreads. Healthy swaps According to the AHA, studies show swaps such as this can lower cholesterol by the same magnitude as cholesterol-lowering drugs. Dr Frank Sacks, lead author of the AHA advice, said: "We want to set the record straight on why well-conducted scientific research overwhelmingly supports limiting saturated fat in the diet to prevent diseases of the heart and blood vessels." In the UK, Public Health England advises people to cut down on saturated fat: the average man should eat no more than 30g of saturated fat a day the average woman should eat no more than 20g of saturated fat a day Nutritional labels on food display how much saturated fat is in products. But experts stress that fat is still an essential part of a healthy, balanced diet. We shouldn't cut out too much. Fat is a source of essential fatty acids and helps the body absorb vitamins, such as A, D and E. Victoria Taylor from the British Heart Foundation said: "To eat well for your heart health it is not just about reducing fat but reducing specific types of fat and taking care over what these are replaced with - unsaturated fats and wholegrains, rather than sugars and refined carbohydrates. "Any change should be viewed in the context of a whole diet approach. The traditional Mediterranean diet has benefits for a range of risk factors for heart disease, not just cholesterol levels. "We recommend replacing the saturated fats in the diet with unsaturated fats - using oils instead of butter and choosing foods like avocado, oily fish, nuts and seeds instead of foods high in saturated fats like cakes, biscuits, chocolate and fatty meat." Low fat tips Grill, bake, poach or steam food rather than deep frying or roasting Trim visible fat and take skin off meat before cooking Spoon off fats and oils from roasts, casseroles, stews and curries When making sandwiches, try leaving out the butter or spread: you might not need it if you're using a moist filling Good fat vs bad fat Cholesterol is a fatty substance that can be found in some foods Low-density lipoprotein (LDL) cholesterol is said to be 'bad' because it can be deposited in the walls of arteries and cause hard plaques to build up that can cause blockages, resulting in heart attacks and stroke High-density lipoprotein (HDL) cholesterol is 'good' because it carries LDL cholesterol to your liver where it is disposed of. A high ratio of good to bad cholesterol is healthiest 備註: 植物性不代表比較好，重點還是脂肪酸。 -- 閒來無事騙Ｐ幣手起生風成廢文 -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 114.25.49.79 ※ 文章網址: https://www.ptt.cc/bbs/Gossiping/M.1497620244.A.F8F.html ※ 編輯: Zauber (114.25.49.79), 06/16/2017 21:38:26

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