Many people use it pejoratively but it is not a swear word.
No
The slang retard refers to mental retardation. Mental retardation is translated as "retard mental".A similarly offensive word in French is abruti.
it is an offensive word related to mental retardation.
no. someone can be called a retard which is slang for someone having mental retardation or is developmentally disabled.
Overstudy does not cause mental retardation.
TThere are quite high as it comes in different types of mental retardation.
Exposure to lead can also cause mental retardation.
literature review on mental retardation with reference
functional
Mental retardation occurs in 2.5-3% of the general population.
Mental retardation has different levels. There is Mild intellectual disability; moderate intellectual disability; severe intellectual disability; and Profound intellectual disability.https://www.floridahospital.com/mental-retardation-mr/symptoms-and-signs-mental-retardation
The two conditions are not at all related. Autism does not cause mental retardation.
because some ppl are born with birth defects like mental retardation