Bài
giảng 'dầu dừa là chất độc' của giáo sư Harvard đạt một triệu lượt xem
Giáo sư Karin Michels từ Đại học Y tế Cộng
đồng T.H. Chan thuộc Đại học Harvard (Mỹ) gây "bão" mạng xã hội vì
gọi dầu dừa là chất độc.
Bài giảng của giáo sư Karin Michels có tựa đề "Dầu dừa
và những sai lầm dinh dưỡng khác", đến nay đã thu hút một triệu lượt xem.
Ngoài công việc là giáo sư dịch tễ học ở Đại học Y tế Cộng đồng T.H. Chan, bà
Michels còn là Giám đốc Viện Phòng ngừa và Dịch tễ Ung thư tại Đại học Freiburg
(Đức).
Theo bà Michels, dầu dừa không lành
mạnh mà còn độc hại với cơ thể. "Tôi phải cảnh báo các bạn về dầu
dừa", nữ giáo sư nhấn mạnh. "Đó là một trong những thứ tồi tệ nhất
bạn có thể ăn".
Trên thực tế, rất ít bằng chứng khoa
học chỉ ra dầu dừa tốt cho sức khỏe, USA Today đưa tin.
"Chẳng có dữ liệu nào cho thấy điều đó cả", bà Alice
Lichtenstein, giáo sư khoa học dinh dưỡng từ Đại học Tufts khẳng định với The NewYork
Times.
Dù không kết tội dầu dừa là
"chất độc", Hiệp hội Tim mạch Mỹ (AHA) chỉ ra hơn 80% chất
béo trong dầu dừa là chất béo bão hòa. Tỷ lệ này cao hơn nhiều so với bơ (63%),
mỡ bò (50%) và mỡ lợn (39%). Bên cạnh đó, dầu dừa có thể làm
tăng lượng cholesterol LDL còn gọi là cholesterol xấu, từ đó đẩy cao nguy cơ
mắc bệnh tim mạch.
Để bảo vệ sức khỏe, AHA khuyến cáo
cộng đồng không dùng dầu dừa. Người cần giảm cholesterol, tỷ lệ chất béo
bão hòa hấp thụ mỗi ngày nên dưới 6% tổng lượng calo.
Năm 2017, ông Donald Hensrud, Giám
đốc Y tế Chương trình Sống khỏe của Bệnh viện Mayo nhận định "có sự mất
kết nối giữa niềm tin phổ biến và bằng chứng thực tế".
Ông Hensrud khuyên thay vì sử dụng dầu dừa, người dân nên dùng các
loại dầu chứa nhiều chất béo không bão hòa đơn như dầu oliu, dầu quả bơ, hoặc
chất béo không bão hòa đa (như dầu hạt cải).
Tuy nhiên, một số chuyên gia cho
rằng mọi người không cần loại bỏ hoàn toàn dầu dừa ra khỏi thực đơn. "Hãy giới hạn lượng dầu dừa và chỉ sử dụng khi nấu món
Thái hoặc làm tráng miệng", giáo sư Walter C. Willett, đồng nghiệp với
giáo sư Karin Michels tại Đại học Y tế Cộng đồng T.H. Chan,
nói với CNN.
Minh Nguyên
Bản
Tiếng Anh
A Harvard professor just busted the
myth that coconut oil is good for you, calling it 'pure poison'
Adding coconut oil to everything won't make it healthier.Flickr/Meal Makeover Moms
A Harvard professor made some controversial comments concerning coconut oil in a lecture posted on YouTube.
The video, which has garnered 400,000 hits, comes after the American Heart Association advised people to avoid coconut oil.
In the talk, titled "Coconut Oil and other Nutritional Errors," professor Karen Michels described coconut oil as "pure poison" and "one of the worst foods you can eat."
________________________________________
A 50-minute German lecture becoming a viral hit on YouTube might sound unusual, but the title of the talk by Karin Michels, the director of the Institute for Prevention and Tumor Epidemiology at the University of Freiburg and a professor at the Harvard TH Chan School of Public Health, has caused a bit of a stir online.
Adding coconut oil to everything won't make it healthier.Flickr/Meal Makeover Moms
A Harvard professor made some controversial comments concerning coconut oil in a lecture posted on YouTube.
The video, which has garnered 400,000 hits, comes after the American Heart Association advised people to avoid coconut oil.
In the talk, titled "Coconut Oil and other Nutritional Errors," professor Karen Michels described coconut oil as "pure poison" and "one of the worst foods you can eat."
________________________________________
A 50-minute German lecture becoming a viral hit on YouTube might sound unusual, but the title of the talk by Karin Michels, the director of the Institute for Prevention and Tumor Epidemiology at the University of Freiburg and a professor at the Harvard TH Chan School of Public Health, has caused a bit of a stir online.
During the lecture, titled "Coconut Oil and other
Nutritional Errors," Michels has made herself very clear with regard to
dietary recommendations, and underlined that coconut oil is not healthy.
Its superfood status had already come under scrutiny last year after the American Heart Association (AHA) updated its guidelines, which recommended that people avoid the saturated fatty acids found in coconut oil..
'Coconut oil is pure poison'
Its superfood status had already come under scrutiny last year after the American Heart Association (AHA) updated its guidelines, which recommended that people avoid the saturated fatty acids found in coconut oil..
'Coconut oil is pure poison'
Michels went a step further than to recommend avoiding
the foodstuff, saying "coconut oil is pure poison" and "is one
of the worst foods you can eat."
There's no study showing significant health benefits to coconut-oil consumption. And, according to Michels, coconut oil is more dangerous than lard because it almost exclusively contains saturated fatty acids, ones that can clog the coronary arteries.. You can identify fats that contain large quantities of saturated fatty acids by checking to see whether they remain solid at room temperature, as is the case with butter or lard.
There's no study showing significant health benefits to coconut-oil consumption. And, according to Michels, coconut oil is more dangerous than lard because it almost exclusively contains saturated fatty acids, ones that can clog the coronary arteries.. You can identify fats that contain large quantities of saturated fatty acids by checking to see whether they remain solid at room temperature, as is the case with butter or lard.
Based on the fact that they contain a lot of unsaturated
fatty acids, experts recommend olive or rapeseed oil as an alternative, and
while it can't be used for cooking, flaxseed oil is rich in omega-3 fatty acids
and is just as good for the body.
While Michels doesn't describe other "superfoods" like acai, chia seeds, or matcha as harmful, at most she considers them ineffective because, in most cases, the nutrients they're touted for are available just as readily in other foods that are more easily accessible such as carrots, cherries, and apricots.
"We are well and sufficiently supplied," she said.
Last year, the AHA updated its guidelines, to recommend people avoid the saturated fatty acids found in coconut oil. Shutterstock
Are saturated fats really that unhealthy?
Most researchers agree that olive oil or linseed oil can form an important part of a healthy diet. While the scientific world is still debating whether saturated fatty acids really are the work of the devil, others say with certainty that that's the case.
While Michels doesn't describe other "superfoods" like acai, chia seeds, or matcha as harmful, at most she considers them ineffective because, in most cases, the nutrients they're touted for are available just as readily in other foods that are more easily accessible such as carrots, cherries, and apricots.
"We are well and sufficiently supplied," she said.
Last year, the AHA updated its guidelines, to recommend people avoid the saturated fatty acids found in coconut oil. Shutterstock
Are saturated fats really that unhealthy?
Most researchers agree that olive oil or linseed oil can form an important part of a healthy diet. While the scientific world is still debating whether saturated fatty acids really are the work of the devil, others say with certainty that that's the case.
However, a study published in the American Journal of
Clinical Nutrition indicated that people who routinely consume cheese, whole
milk, and other high-fat dairy products — in essence, products high in
saturated fatty acids — are at no higher risk of dying from a heart attack,
stroke, or other illness than those who avoid such products.
Another study using data from 135,000 people in 18 countries and published in The Lancet, found that high fat and low carbohydrate consumption were associated with a 23% lower risk of death. And, even more exciting, the positive effect still stands, regardless of whether saturated or unsaturated fatty acids are being consumed.
Another study using data from 135,000 people in 18 countries and published in The Lancet, found that high fat and low carbohydrate consumption were associated with a 23% lower risk of death. And, even more exciting, the positive effect still stands, regardless of whether saturated or unsaturated fatty acids are being consumed.
So what's the actual verdict on coconut oil? Most
international dietary guidelines recommend enjoying saturated fats in
moderation. As the saying goes, the dose makes the poison, so if you do have a
soft spot for coconut oil just take care not to overindulge.
Read the original article on Business Insider Deutschland.
This post originally appeared on Business Insider Deutschland and has been translated from German.
Copyright 2018. Follow Business Insider Deutschland on Twitter.
Read the original article on Business Insider Deutschland.
This post originally appeared on Business Insider Deutschland and has been translated from German.
Copyright 2018. Follow Business Insider Deutschland on Twitter.
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