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# Fish, fish oil supplements help prevent venous thromboembolism
- URL: https://www.foodconsumer.org/fish_fish_oil_venous_thromboembolism_0702140138/
- Published: 2014-07-02T14:38:00.000Z
- Updated: 2026-09-22T16:10:18.000Z
- Description: Among 23,621 Tromso Study participants followed a median 15.8 years, eating fish three or more times a week tracked with 22 percent lower venous thromboembolism risk, and 48 percent lower when fish oil supplements were added. The study is observational, so cause is not established.
- Author: Food Consumer
- Tags: Food, Nutrition, #vivvo-import

Wednesday July 2, 2014 (foodconsumer.org) -- A new study suggests that eating fish often and and taking fish oil supplements can help prevent venous thromboembolism.

The study shows people who ate fish three or more times per week and also took fish oil supplements were 48% less likely to develop venous thromboembolism, compared with those who ate fish once or twice per week but did not take fish oil.

Taking fish oil supplements in addition to fish consumption strengthened the protective effect against venous thromboembolism.

The study also finds eating fish three or more times per week was associated with 22% reduced risk of venous thromboembolism, compared with eating fish one or twice per week.

The study involved 23,621 participants aged 25 to 97 years who were enrolled in the Tromsø Study from 1994 to 1995\. Participants were followed by a median of 15.8 years.

The study concluded "In conclusion, a high weekly intake (≥3 times/wk) of fish was associated with a slightly reduced risk of VTE, and the addition of fish oil supplements strengthened the inverse effect."

It should be noted that the study is not a trial meaning that eating fish or taking fish oil supplements may not be the cause for the reduction in the risk of venous thromboembolism. Those who eat fish and or take fish oil supplements may follow a better diet, which as a whole reduce the risk.

The risk of developing venous thromboembolism may not be due to the lack of fish consumption. It has been known that birth control pills and testosterone products among other things can increase risk of venous thromboembolism. (David Liu, PHD)

Hansen-Krone IJ, Enga KF, Südduth-Klinger JM, Mathiesen EB, Njølstad I, Wilsgaard T, Watkins S, Brækkan SK, Hansen JB. High fish plus fish oil intake is associated with slightly reduced risk of venous thromboembolism: the Tromsø Study. J Nutr. 2014 Jun;144(6):861-7.