Consuming high amounts of trans fat more than doubled the risk for non-Hodgkin’s lymphoma.

A few more foods to stay away from if you are at risk for lymphoma: beef, pork, lamb, and trans fat. Trans fat is found in partially hydrogenated oils. Foods include anything fried like doughnuts, chicken nuggets, and French fries; many commercially baked goods like cakes, pie crusts, biscuits, pizza, cookies, and crackers; and margarines or other spreads. Those were the findings of this study:

Dietary Fat And Protein In Relation To Risk Of Non-Hodgkin’s Lymphoma Among Women, Journal of the National Cancer Institute, 1999

This was a good study: large (88,410 women in Nurses’ Health Study), prospective, long 14-year follow-up.

Intake of beef, pork, or lamb as a main dish was associated with a statistically significantly increased risk of non-Hodgkin’s lymphoma; the multivariate relative risk for consumption of these meats at least once per day as compared with less than once per week was 2.2 (95% CI = 1.1-4.4; P for trend = .002).
…
Higher intake of trans unsaturated fat was also statistically significantly associated with an increased risk of the disease; the multivariate relative risk for the highest versus the lowest quintiles was 2.4 (95% CI = 1.3-4.6; P for trend = .01).

They concluded:

In the Nurses’ Health Study, higher intakes of beef, pork, or lamb as a main dish, trans unsaturated fat, and saturated fat are associated with greater risk of non-Hodgkin’s lymphoma.

If you combine these results with those of the study in my prior post which fingered chicken (specifically, all poultry), a low-fat vegan diet would seem to be the way to go.