Humans used to have straighter teeth.

The claim that humans used to have straighter teeth is supported by multiple lines of evidence from fossil records and anthropological studies. Ancient human skulls typically show well-aligned teeth with fewer instances of crowding or malocclusion, which contrasts with the higher prevalence of crooked teeth in modern populations.thekidshouldseethis.comthekidshouldseethis.comWhy did early humans have straight teeth without orthodontics? This difference is primarily attributed to evolutionary changes such as jaw shrinkage over thousands of years, especially following the Agricultural Revolution about 12,000 years ago, which altered diet and chewing habits leading to smaller jaws that cannot accommodate all teeth properly.ed.ted.comed.ted.comWhy do we have crooked teeth when our ancestors didn’t?

Additionally, the natural diet of early humans involved tougher, unprocessed foods requiring more chewing, which promoted stronger jaw development and better dental alignment. However, it is important to note that not all ancient humans had perfectly straight teeth; some variation existed, and dental issues were not entirely absent. Modern lifestyle factors such as softer diets and reduced chewing demands contribute significantly to the increased incidence of crooked teeth today.

Thus, while the core claim is accurate in a general sense, it simplifies a complex evolutionary and environmental process.