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Analysis v1
Strong Support

Taking a daily omega-3 supplement for over five years doesn't seem to lower the risk of getting any kind of invasive cancer in healthy people over 50, according to a big study.

74
Pro
0
Against

Evidence from Studies

Supporting (1)

74

Community contributions welcome

74

Marine Omega-3 Fatty Acids and Prevention of Vascular Disease and Cancer

Randomized Controlled Trial
Human
2019 Jan 3

This big study gave thousands of older adults fish oil pills every day for over five years and found they didn’t get less cancer than people who took dummy pills. So, fish oil doesn’t seem to help prevent cancer in healthy older people.

Contradicting (0)

0

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No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Marine Omega-3 Fatty Acids and Prevention of Vascular Disease and Cancer

Score: 74
DOI: 10.1056/NEJMoa1811403

Similar Assertions

Taking a daily omega-3 supplement for about five years doesn't seem to lower the chance of getting invasive cancer in healthy people over 50.

74
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Taking a daily omega-3 supplement for about five years doesn't seem to lower the risk of heart attacks, strokes, or heart-related death in healthy people over 50.

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Taking a daily omega-3 supplement for about five years might lower the chance that healthy adults over 50 will need a heart procedure to open a blocked artery, but it’s not clear if the supplement directly caused this benefit.

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Taking a daily omega-3 supplement for about five years might lower the chance of having a heart attack in people over 50 who are otherwise healthy, but scientists aren't totally sure yet and need to check this again.

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