A French doctor recruited 330 women in order to debunk the theory that bras can keep bosoms from sagging.

Women have been wearing undergarments to support their bosoms for years — as far back as ancient Greece. From corsets and backless brassieres to the modern elastic bra, these items have been indispensable parts of most women's wardrobe. But new research claims that bras are anything but uplifting.

The study incited an international debate when a French professor performed a 15-year research on the evolution of the bra-less bosom.

Jean-Denis Rouillon, a professor at University of Besançon in France, authored a study stating that women are better off not wearing bras. They are scientifically unnecessary, and, in fact, could be hazardous to bosom health, leading to sagging bosoms and increased back pain.

The study involved 330 females between the ages 18 and 35, out of which 50 were asked to not wear bras. They all volunteered to have their anatomies measured and examined for any changes to orientation using a slide rule and caliper.

"Medically, physiologically, anatomically — bosoms gain no benefit from being denied gravity, Rouillon told France Info radio. "On the contrary, they get saggier with a bra."

Specifically, he showed that without a bra, the nip.ple climbs back up by 7 mm in a year, while the bosom overall get firmer and stretch marks begin to fade. He said that by the time a woman hits 25 while wearing the bra, the bosoms begins to sag.

One 28-year-old woman identified as "Capucine" participated in Rouillon's study and said she hasn't worn a bra for two years and could attest to the results.

"There are multiple benefits: I breathe more easily, I carry myself better, and I have less back pain," Capucine told France Info.

Back pain has been long associated with heavier bosoms and the incorrect bra support. Proper posture is also essential to back health, whether going bra-less or wearing on the undergarment.

Rouillon expressed his belief that culture is at fault for making women believe a bra is required. Nonetheless, he recommends some women to not throw away their bras over this finding.

"It would be of no benefit to a 45-year-old mother to stop wearing a bra," he said.

The modern bra was patented to Mary Phelps Jacob, a socialite who created an undergarment for one of her evening gowns. Its popularity arose during World War I when women decided they needed a device that would be practical to wear in the workforce.