The relationship between serotonin transporter gene promoter polymorphism and serum lipid levels at young age in a longitudinal population-representative study

► Cholesterol levels have been associated with psychiatric and behavioral disorders. ► 5-HTTLPR genotype has been found associated with lipid levels in elderly population. ► Children and adolescents with l allele had higher LDL and total cholesterol levels. ► 5-HTTLPR genotype has an effect on lipid levels already in young age.