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24-09-2023, 01:01 PM
Korin Miller
Wed, 20 September 2023 at 5:29 am SGT
Fish oil supplements have come under fire recently after research found many brands make claims about heart health that aren't backed up by clinical trial data. Now there's even more bad news for these supplements: Many consumers are getting fish oil pills that are rancid.
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why are many fish oil supplements going bad, and how can you tell?
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The multiyear study found that the vast majority of fish oil supplements tested have oxidized and are rancid by the time they get to consumers. That can cause the supplements to have a fishy odor, which they're actually not supposed to have, as well as reduce their health benefits.
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The study, published in the Journal of Dietary Supplements, analyzed 72 over-the-counter omega-3 supplements sampled from 2014 to 2020.
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The researchers discovered that 68% (or 23 out of 34) of the flavored supplements and 13% (five out of 38) of the unflavored ones exceeded the TOTOX (total oxidation value) upper limit set by the Global Organization for EPA and DHA, which measures oxidation in the supplements — meaning they had oxidized and were rancid.
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One study of 54 healthy participants who took oxidized (rancid) fish oil, high-quality fish oil or high-oleic sunflower oil found that those in the rancid fish oil group experienced significant (and unfavorable) effects on lipoproteins — particles made of protein and fats that carry cholesterol through your bloodstream to your cells — compared with those in the high-quality fish oil group, who saw a beneficial effect on lipoproteins.
Another study of 52 women who were randomly assigned to get oxidized or nonoxidized fish oil supplements for 30 days found that those in the rancid group did not see any significant impact on cholesterol and blood pressure. The nonoxidized group, by comparison, had lowered blood pressure and total cholesterol.
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Best-case scenario, says Frame, "these supplements don't work because they don't provide that beneficial antioxidant property." But, she says, there's also a risk they may increase inflammation in the body. Bodily inflammation has been linked to a slew of health issues, including heart disease, type 2 diabetes and some forms of cancer.
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"Consuming rancid or oxidized fish oil supplements may not provide the intended health benefits. In fact, it may lead to digestive discomfort, such as burping, indigestion or diarrhea," she says. "Over time, the consumption of oxidized fats may contribute to cellular damage and inflammation."
https://sg.yahoo.com/news/lifestyle/fish...40931.html
Wed, 20 September 2023 at 5:29 am SGT
Fish oil supplements have come under fire recently after research found many brands make claims about heart health that aren't backed up by clinical trial data. Now there's even more bad news for these supplements: Many consumers are getting fish oil pills that are rancid.
......
why are many fish oil supplements going bad, and how can you tell?
......
The multiyear study found that the vast majority of fish oil supplements tested have oxidized and are rancid by the time they get to consumers. That can cause the supplements to have a fishy odor, which they're actually not supposed to have, as well as reduce their health benefits.
......
The study, published in the Journal of Dietary Supplements, analyzed 72 over-the-counter omega-3 supplements sampled from 2014 to 2020.
......
The researchers discovered that 68% (or 23 out of 34) of the flavored supplements and 13% (five out of 38) of the unflavored ones exceeded the TOTOX (total oxidation value) upper limit set by the Global Organization for EPA and DHA, which measures oxidation in the supplements — meaning they had oxidized and were rancid.
......
One study of 54 healthy participants who took oxidized (rancid) fish oil, high-quality fish oil or high-oleic sunflower oil found that those in the rancid fish oil group experienced significant (and unfavorable) effects on lipoproteins — particles made of protein and fats that carry cholesterol through your bloodstream to your cells — compared with those in the high-quality fish oil group, who saw a beneficial effect on lipoproteins.
Another study of 52 women who were randomly assigned to get oxidized or nonoxidized fish oil supplements for 30 days found that those in the rancid group did not see any significant impact on cholesterol and blood pressure. The nonoxidized group, by comparison, had lowered blood pressure and total cholesterol.
......
Best-case scenario, says Frame, "these supplements don't work because they don't provide that beneficial antioxidant property." But, she says, there's also a risk they may increase inflammation in the body. Bodily inflammation has been linked to a slew of health issues, including heart disease, type 2 diabetes and some forms of cancer.
......
"Consuming rancid or oxidized fish oil supplements may not provide the intended health benefits. In fact, it may lead to digestive discomfort, such as burping, indigestion or diarrhea," she says. "Over time, the consumption of oxidized fats may contribute to cellular damage and inflammation."
https://sg.yahoo.com/news/lifestyle/fish...40931.html
