Which population groups are at risk and why?
This section will focus on core epidemiological issues that take account of fixed risk factors (such as age, gender, ethnicity, family history) and modifiable risk factors (such as behaviour). The wider determinants of health (such as housing, transport and environment) are also considered.
Age
The critical age group at risk includes infants, children and young people, particularly during early development stages and throughout school years1.
Socioeconomic status
Poor maternal health, limited access to healthcare and exposure to environmental stressors in low-income communities contribute to higher risk. Children born into poverty are more likely to experience conditions that increase the risk2.
Qualifications
Individuals from households with lower levels of parental education or qualifications are at greater risk of developing a learning disability. Socioeconomic conditions play a significant role in influencing early childhood development and access to diagnosis and support3.
Mental health
There is a strong association between learning disabilities and mental health conditions with around 40% of those with a learning disability experiencing mental health problems4.
Ethnicity
There is not an ethnic group at greater biological risk of developing a learning disability. Children from BAME communities may be more likely to be diagnosed later or face barriers to support which can affect outcomes5.
Children from Gypsy, Roma and Traveller communities are identified as being at higher risk of poorer access to healthcare and educational support which can delay diagnosis and intervention5.
Vulnerable Children
Vulnerable children are at greater risk of developing or being affected by learning disabilities. Vulnerability in children shaped by factors such as poverty, unstable home environments, trauma and limited access to quality education can significantly impact cognitive and emotional development6. Children in care, those with safeguarding concerns or those from socially disadvantaged backgrounds may also face delays in diagnosis and reduced access to educational and health care support6.
Prenatal Maternal Health
Women with learning disabilities themselves often experience poorer maternal health which can affect fetal development this may be due to being less likely to attend regular antenatal appointments or understand health information7.
Conditions during pregnancy, including pre-eclampsia, venous thromboembolism and poor nutrition, are associated with increased risk8.
Maternal exposure to poverty, domestic abuse, substance misuse and poor living conditions is linked to higher risk. This affects children through stress, poor nutrition and limited healthcare access9.
Alcohol, tobacco and drug use during pregnancy are risk factors for learning disability 10,11.
Birth Complications
Complications during birth such as hypoxia, trauma or premature delivery can affect brain development and increase the risk of learning disabilities 7,12.
Childhood Illness
Illness in early childhood specifically: meningitis, encephalitis and other serious infections that cause damage to the brain leading to long-term cognitive impairment and head injury or trauma, can interfere with normal brain development especially if during critical development periods13.
Genetics
Most disorders associated with learning disability have a genetic component 14,15.