Saturday November 17, 2018

Omega-3s from fish more effective in cancer prevention

The study involved feeding the different types of Omega-3s to mice with a highly aggressive form of human breast cancer called HER-2

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Based on the doses given in the study, humans should consume two to three servings of fish a week to have the same effect. Pixabay
Based on the doses given in the study, humans should consume two to three servings of fish a week to have the same effect. Pixabay
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  • Omega-3 fatty acids from fish pack a stronger punch than flaxseed and other oils
  • This study is the first to compare the cancer-fighting potency of plant-versus marine-derived Omega-3s on breast tumor development
  • Based on the doses given in the study, humans should consume two to three servings of fish a week to have the same effect

When it comes to cancer prevention, Omega-3 fatty acids from fish pack a stronger punch than flaxseed and other oils, new research has found.

Marine-based omega-3s are eight times more effective at inhibiting tumor development and growth than plant-based sources, said the study published in the Journal of Nutritional Biochemistry.

“This study is the first to compare the cancer-fighting potency of plant-versus marine-derived Omega-3s on breast tumor development,” said David Ma, Professor at the University of Guelph in Ontario.

ALSO READ: Here’s how eating fish could be IQ booster for your kid

There are three types of Omega-3 fatty acids: a-linolenic acid (ALA), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). Pixabay
There are three types of Omega-3 fatty acids: a-linolenic acid (ALA), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). Pixabay

“There is evidence that both Omega-3s from plants and marine sources are protective against cancer and we wanted to determine which form is more effective,” Ma said.

ALA is plant-based and found in such edible seeds as flaxseed and in oils, such as soy, canola and hemp oil.

EPA and DHA are found in marine life, such as fish, algae, and phytoplankton.

The study involved feeding the different types of Omega-3s to mice with a highly aggressive form of human breast cancer called HER-2.

Ma exposed the mice to either the plant-based or the marine-based Omega-3s.

“The mice were exposed to the different omega-3s even before tumors developed, which allowed us to compare how effective the fatty acids are at prevention,” said Ma.

Overall exposure to marine-based omega-3s reduced the size of the tumors by 60 to 70 percent and the number of tumors by 30 percent. Pixabay
Overall exposure to marine-based omega-3s reduced the size of the tumors by 60 to 70 percent and the number of tumors by 30 percent. Pixabay

ALSO READ: Benefits of eating fish in boosting IQ

However, higher doses of the plant-based fatty acid were required to deliver the same impact as the marine-based Omega-3s, the study said.

Omega-3s prevent and fight cancer by turning on genes associated with the immune system and blocking tumor growth pathways, said Ma.

Based on the doses given in the study, humans should consume two to three servings of fish a week to have the same effect, he said. (IANS)

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Teenage Girls Being Urged To Befriend ‘Middle-Aged Men’ On Facebook: Report

In October, Facebook had removed 8.7 million user images of child nudity

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This photo shows the logo for Facebook on screens at the Nasdaq MarketSite, in New York's Times Square. VOA

Facebook is encouraging grooming by offering teenage girls middle-aged men as ‘friend suggestions’, the media reported.

Teenage girls, as young as 13-year-olds, who join the social network are given up to 300 suggestions for who they can add as friends, some of which include middle-aged men who are topless in their profile photos, The Telegraph reported late on Saturday.

Facebook has said that was not a typical experience for teenagers for signing up for the service and that it has safeguards built into its recommendation system.

Following the findings, UK-based charity the National Society for the Prevention of Cruelty to Children (NSPCC) has called for friend recommendations to be suspended for children on the social networking giant’s platform.

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A cellphone user looks at a Facebook page at a shop in Latha street, Yangon, Myanmar. VOA

‘Groomers are seeking to infiltrate children’s friendship groups on social networks, often with the intention to move children to live streaming or encrypted sites where it is easier for them to commit sexual abuse,” Andy Burrows, NSPCC Associate Head of Child Safety Online, was quoted as saying.

“Social media algorithms risk making it easier for groomers to find and contact children and ‘friend of friend’ or ‘new follower’ recommendations can add legitimacy to their requests, which is why we are calling for these features to be blocked for children.

“For too long social networks have failed to make their platforms safe for children, and that is why the Home Secretary must commit to strong and effective regulation to finally ensure that children’s safety is non-negotiable,” she said.

According to Facebook, the company has safeguards to protect children. However, the campaigners warn that the networking giant must do more to stop groomers who use the site to become friendly with children.

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This photo shows a Facebook app icon on a smartphone in New York. VOA

“Grooming is incredibly serious, and we have teams specifically focused on keeping children safe, informed by extensive research and outside experts,” said a spokesman for Facebook, the Daily Mail reported on Saturday.

“We use artificial intelligence to proactively identify cases of inappropriate interactions with minors and we refer potential abuse to law enforcement.

“We limit how children can be found in search, we remind them to only accept friend requests from people they know and we caution them before making public posts.”

Also Read: Twitter Giving Its Users More Freedom To Report Fake, Suspicious Accounts

In October, Facebook had removed 8.7 million user images of child nudity with the help of previously undisclosed machine learning software that automatically flagged such photos during the last quarter.

The company has said that it is also considering rolling out systems for spotting child nudity and grooming to Instagram. (IANS)