Scoliosis are "captured", meaning that they are held fast between the ilium bones of the pelvis. Compared to humans, Old World monkeys have far larger erector spinae muscles, which are the muscles which hold the spine steady. These factors make the lumbar spine of most primates less flexible and far less likely to deviate than those of humans. While this may explicitly relate only to lumbar scolioses, it is possible that small imbalances in the lumbar spine could precipitate thoracic problems as well. Scoliosis may be a byproduct of strong selection for bipedalism. For a bipedal stance, a highly mobile, elongated
Body image had recently complained about the way they look. The main causes of male body issues include 25% being teased about their weight, while 33% specified social media as the source for self-consciousness. A factor that affects male body image on social media sites is "celebrity involvement". Following celebrities on social media sites makes it possible to interact personally with celebrities, which has been shown to influence male body image. A number of respondents also admitted to being affected by negative body talk from others. Men may also suffer from the mental disorder bigorexia, also known as muscle dysmorphia. Sufferers of