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Obstetric complications or events
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Maternal Stress
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Fetal Growth
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Low birthweight
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Cerebral atrophy
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Foetal Hypoxia at or immediately after birth
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Prenatal stress
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Intrauterine malnutrition
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Prenatal infection
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Paternal age
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Chromosomal aberrations and mutations
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Adverse prenatal environment.
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A complex interaction between maternal genotype, maternal behavior, prenatal environment and possibly medication
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Caeliac Disease (Gluten Intolerance)
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Exposure to toxins such as lead
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High neuroticism increases
