2D:4D ratio

1 paper1 finding

Associations

1

Breast cancer

upin humans1

1 study

2D:4D ratio raises the risk of breast cancer in humans.
“current findings suggest a possible association between higher 2D:4D ratios and breast cancer risk, although substantial heterogeneity exists across studies.”
Reviewfemales
Second-To-Fourth Digit Ratio (2D:4D) in Breast Cancer: A Systematic Review
American journal of human biology : the official journal of the Human Biology Council1 Aug 2026

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