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Second to Fourth Digit Ratio (2D:4D) in Hypertension Disease.
Refik Servi1, Ramazan Fazil Akkoc1, Feyza Aksu1
1Department of Anatomy, Faculty of Medicine, Firat University, Elazig, Turkey.
The second to fourth digit ratio (2D:4D) may predict hypertension risk. Individuals with hypertension showed a significantly higher 2D:4D ratio in both hands compared to controls, suggesting its potential as an early risk indicator.
Area of Science:
- Endocrinology
- Cardiovascular Medicine
- Anthropometry
Background:
- The second to fourth digit ratio (2D:4D) is a sexually dimorphic trait influenced by prenatal sex hormone exposure.
- This ratio has been investigated as a potential biomarker for various adult diseases, including cardiovascular conditions.
- Previous research suggests a link between 2D:4D and cardiovascular disease risk.
Purpose of the Study:
- To investigate the 2D:4D ratio in both hands of patients diagnosed with hypertension.
- To compare the 2D:4D ratio between hypertensive individuals and a healthy control group.
- To determine if 2D:4D differs significantly between hypertensive and non-hypertensive subjects.
Main Methods:
- The study included 400 hypertensive patients (200 males, 200 females) and 400 healthy controls.
- The 2D:4D ratio was calculated by measuring the lengths of the second and fourth fingers on both hands for all participants.
- Height, weight, and body mass index (BMI) were also recorded for both groups.
Main Results:
- Hypertensive individuals had a significantly higher mean BMI, falling into the overweight category, compared to the normal weight control group (p < 0.001).
- A significantly higher 2D:4D ratio was observed in both males and females with hypertension compared to controls.
- This elevated 2D:4D ratio was consistent across both the right and left hands in the hypertensive group (p = 0.001 for males, p < 0.001 for females).
Conclusions:
- The 2D:4D ratio may serve as a significant indicator of an individual's predisposition to hypertension from birth.
- Individuals identified with a higher 2D:4D ratio could be considered at increased risk, enabling proactive lifestyle choices.
- This finding highlights the potential of 2D:4D as a non-invasive biomarker for hypertension risk assessment.
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