Research shows strangulation is never a safe practice, despite a widespread belief it can be performed safely. Though it often leaves no visible injury, oxygen deprivation, even for very short moments, causes changes to the fragile structures of the brain.
Multiple studies have specifically shown brain changes in women who have been repeatedly “choked” during sex, including markers for brain damage and disruptions in brain hemispheres linked to depression and anxiety.
To be honest that actually seems like reason enough even if it is genuinely consensual