Diets that promote inflammation could increase breast cancer risk
Analysis of dietary patterns for over 350,000 women suggests eating more anti-inflammatory foods helps lower risk
2021-06-07
(Press-News.org) Rockville, Maryland (June 7, 2021) -- A new study of more than 350,000 women found that women with diets incorporating more foods that increase inflammation in the body had a 12% increase in their risk of breast cancer compared to women who consume more anti-inflammatory diets. The new findings are being presented at NUTRITION 2021 LIVE ONLINE.
The study authors found that moving from a more anti-inflammatory diet toward one that increases inflammation upped breast cancer risk in an almost linear manner. Foods that increase inflammation include red and processed meat; high-fat foods such as butter, margarines and frying fats; and sweets including sugar, honey and foods high in sugar. Fruits, vegetables, legumes, tea and coffee all have potentially anti-inflammatory properties.
"Most studies examining diet and breast cancer risk have focused on single nutrients or foods rather than the whole diet," said the study's first author Carlota Castro-Espin, a predoctoral fellow at the Catalan Institute of Oncology and Bellvitge Biomedical Research Institute in Barcelona, Spain. "People consume food not nutrients, thus examining overall dietary patterns, rather than single components of diets can lead to more accurate conclusions when analysing associations with a health outcome such as breast cancer."
The new results are based on data from the European Investigation into Cancer and Nutrition (EPIC) study, a prospective study that recruited more than 500,000 participants across 10 European countries starting in the mid-1990s. The study included more than 13,000 breast cancer diagnoses during approximately 15 years of follow-up.
The typical diet for EPIC participants was measured for a year using food frequency or diet history questionnaires. The researchers used this information to calculate an inflammatory score for each study participant based on their intake of 27 foods.
The researchers examined dietary patterns linked with inflammation because long-term, low grade inflammation has been linked with the development of breast cancer. The large number of women in the study allowed the researchers to take a more nuanced look at the relationship between dietary patterns and breast cancer risk.
Their analysis showed that the increase in breast cancer risk due to pro-inflammatory diets appears to be more pronounced among premenopausal women. They also found that the association did not vary by breast cancer hormone receptor subtypes.
"Our results add more evidence of the role that dietary patterns play in the prevention of breast cancer," said Castro-Espin. "With further confirmation, these findings could help inform dietary recommendations aimed at lowering cancer risk."
As a next step, the researchers plan to evaluate the association of the inflammatory potential of diet and other dietary patterns with breast cancer survival using participants in the EPIC study.
Castro-Espin will present this research on-demand during NUTRITION 2021 LIVE ONLINE from noon on Monday, June 7 through 5:30 p.m. on Friday, June 10 (abstract; presentation details).
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Please note that abstracts presented at NUTRITION 2021 LIVE ONLINE were evaluated and selected by a committee of experts but have not generally undergone the same peer review process required for publication in a scientific journal. As such, the findings presented should be considered preliminary until a peer-reviewed publication is available.
INFORMATION:
About NUTRITION 2021 LIVE ONLINE
NUTRITION 2021 LIVE ONLINE, held June 7-10, 2021 is a dynamic virtual event showcasing new research findings and timely discussions on food and nutrition. Scientific symposia explore hot topics including clinical and translational nutrition, food science and systems, global and public health, population science and cellular and physiological nutrition and metabolism. https://meeting.nutrition.org #NutritionLiveOnline
About the American Society for Nutrition (ASN)
ASN is the preeminent professional organization for nutrition research scientists and clinicians around the world. Founded in 1928, the society brings together the top nutrition researchers, medical practitioners, policy makers and industry leaders to advance our knowledge and application of nutrition. ASN publishes four peer-reviewed journals and provides education and professional development opportunities to advance nutrition research, practice and education. http://www.nutrition.org
Find more news briefs and tipsheets at: https://www.eurekalert.org/meetings/nutrition/2021/newsroom. Watch on-demand
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[Press-News.org] Diets that promote inflammation could increase breast cancer risk
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