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What Does the 2D:4D Ratio Predict About Us?

Scientists are presently studying the 2D:4D Ratio, or rather the ratio of the lengths of the second and fourth digits on a persons hand. The researchers who believe in this ratio, also believe it possesses predictive power. Apparently the ratio tells us what level of testosterone and other hormones that guide development (especially in the brain), a fetus was exposed too prior to being born. Want to know if you're going to become a writer, an alcoholic, a little overweight in your later years, or even suffer from a premature heart attack? Apparently, the lengths between the 4th and 2nd Digits (2D:4D) have the ability to tell us just that, and much, much more...

These ideas stem from the work of John Manning out of Swansea University in the United Kingdom. John's work has inspired more than 14,000 papers in just over 20 years which have linked the finger ratio to a number of different attributes such as personality, cognitive abilities, and sexual orientation...not to mention cardiovascular disease, cancer, and amyotrophic lateral sclerosis. Researchers have even tried to use ratios gleaned from stenciled handprints on cave walls to determine if the artists behind the writing were men or women. 

As with any research, these ideas also come with their fair share of criticism. The primary being that anyone who thinks that the 2D:4D ratio has any predictive powers has been duped by a simplistic explanation, and faulty measure of much more complex DNA mapping. Some even argue that the difference in ratio between the different sexes is strictly due to relative hand size, causing the measure itself to be problematic. 

At FingerWeights, we aren't as concerned with what your fingers say about your personality, as we are with making sure that your fingers and hands are healthy, thriving, and always performing at the highest of levels. Both the Original and Flex FingerWeights not only help in the fight against Rheumatoid Arthritis as well as repetitive motion injuries (RMI) like Carpal Tunnel and Tendonitis, but we also help increase finger endurance, flexibility / range of motion, dexterity, precision, and overall strength (NOT brute strength). 

To read the entire article on the 2D:4D ratio, click on this link...Talk to the Hand. Otherwise, please feel free to visit FingerWeights, and let us know what you think by emailing us ( 

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