Abstract
Objective
Low cholesterol is associated with depression among western countries. The objective of this study was to examine the relationship between cholesterol and depression in Korean population with low levels of serum cholesterol.
Methods
The data of about 740,000 individuals, aged 30-64 years at entry in the Korean Cancer Prevention Study, were used. Total cholesterol levels were measured in 1992. Depression was measured using the modified DSM-IV (Diagnostic Criteria of Major Depressive Episode in Diagnostic and Statistical Manual of Mental Disorders-IV) scale. Total cholesterol was classified into four groups (quartile). Odds Ratios of low level of cholesterol were evaluated using multi-variable logistic models.
Results
The prevalence of major depression was 7.7% in men and 10.4% in women. After adjustment for various confounding variables, an inverse association was detected between cholesterol levels and depression intensity among men and women. The odds ratio (95% confidence interval) of the lowest quartile of cholesterol was 1.16 (1.13-1.20) on major depression compared with the highest quartile of cholesterol in men. The corresponding odds ratio among women was 1.09 (1.04-1.15). The strongest association among 9 items of depression was found at "decreased appetite and lost weight" in both men (OR=1.68) and women (OR=1.43).
Figures and Tables
Table 5
1. I feel depressed with no particular reason.
2. I have lost interest, pleasure, and sexual desire in daily life.
3. I have decreased appetite and lost weight.
4. I have difficulty getting to sleep or staying asleep.
5. I feel agitated and restless.
6. Recently, there are times when I feel very tired without any particular reason.
7. I feel worthless or excessively guilty.
8. My memory is declining and I have difficulty concentrating.
9. I occasionally have thoughts about suicide.SD: standard deviation.
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