freemore
Talking about comfort women, the system was not only Japan. USA and South Korea had also introduced exactly same system during Korean war. Look at today's USA. How many Korean prostitutes are out there? They would be called sex slaves 50 years later.
The length of intestines are not relating to their races. It's just relating to their height and age.
In 1995, British and Japanese research institutes reported as 'International Colorectal Disease'. In 2004, Tokyo University also reported similar subject. Both reports completely denied the story like "Japanese intestines are 1.5x longer".
I think many Japanese believe this kind of stories, it's because one Japanese drug company made false advertisement to boost their products. After all, this is Pseudoscience.
Japanese and Americans, there are no big differences.