Why the study?
Are serum cholesterol levels associated with variations in mental state, personality, or psychiatric disorders?
Are serum cholesterol levels associated with variations in mental state, personality, or psychiatric disorders?
This review highlights a potential association between altered or lowered serum cholesterol levels and adverse psychiatric outcomes, including violent deaths and depression.
Caution advised when lowering cholesterol in primary prevention; leaves open causal psychiatric risks requiring prospective study.
BACKGROUND: Cholesterol plays an important part in cellular structure and function and changes in serum levels may affect neurotransmission in the central nervous system. METHOD: A MEDLINE literature search was made covering the period 1990-95 with systematic searching of citations from the articles identified. Representative articles were selected, focusing on those aspects which had not been thoroughly reviewed elsewhere, namely suicidal ideation, depression, personality and schizophrenia. RESULTS: Lowering cholesterol levels have been associated with an increase in violent deaths in cardiovascular primary prevention studies. However, altered cholesterol levels have also been reported in relation to other psychiatric disorders. CONCLUSION: There is substantial evidence that serum cholesterol levels may be associated with variations in mental state or personality. Further work is needed to clarify this and to elucidate the mechanisms involved.
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Boston et al. (1996) studied this question.