Research

Hormonal

High daily consumption of carbohydrates (>60% of total energy) and simple sugars (>10% of total energy) is associated with a statistically significant increase in breast cancer risk.

To potentially lower breast cancer risk, aim to keep carbohydrate intake below 60% of your total daily energy and ensure simple sugars (added sugars) do not exceed 10% of your total energy. Focus on reducing refined sugars and high-glycemic carbohydrates, as high intake of these is linked to a significantly higher risk of developing breast cancer in this study.

ModerateSupportsMEDIUM confidence
Consuming high amounts of carbohydrates and simple sugar in the daily diet statistically increases breast cancer (p<0.05).
Aybala Tazeoğlu et al. · Clinical Science of Nutrition · 2026

Why this rating

The study is a cross-sectional observational design with a relatively small sample size (n=321) and relies on 72-hour dietary recalls, limiting causal inference.

Source

Is carbohydrate consumption a risk factor for breast cancer?

Aybala Tazeoğlu et al. · Clinical Science of Nutrition · 2026

DOI 10.62210/clinscinutr.2025.124

cross_sectional · n=321
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

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