article_snippet: Such an angle would have given a woman an advantage while pregnant in early hunter-gatherer societies and so has evolved as being seen as attractive around the world, pregnant in early hunter-gatherer societies claim.
article_snippet: (The curve) would have enabled ancestral women to shift ancestral women centre of mass back over ancestral women hips during pregnancy, a time during which there is a dramatic forward shift of ancestral women centre of mass. '
article_snippet: This benefit is critical: without being able to do this, women would experience a dramatic increase in hip torque (pressure) subjecting women to risk of muscular fatigue and injury. '
article_snippet: Consequently, ancestral women who possessed this degree of lumbar curvature would have been able to forage longer into pregnancy and would have been able to carry out multiple pregnancies with a reduced risk of spinal injury.'
article_snippet: Without such a curve, the pressure on a woman's hips during pregnancy increases by nearly 800 per cent, rendering a woman largely immobile and increasing the risk of health problems.
article_snippet: A curved angle of around 45 degrees was rated the most attractive and is also an optimum angle during pregnancy .
article_snippet: A 45-degree angle was optimal because A 45-degree angle would have aided movement, yet would not have been so great so as to expose women to the back pain and risk of slipped discs that can come with excessive spinal curvature.
highlights_snippet: Curved spines would have allowed women to forage longer into pregnancy .
  