The increase of adrenal volume and VAT and the correlation of BDI with VAT in the upper abdomen support the hypothesis of long-term production of stress hormones in depression. This study is a further step toward describing morphologic substrates of depression in endocrine organs.
The high correlation between the adrenal gland volume and VAT in women underlines the link between hypothalamic-pituitary-adrenal (HPA) axis, stress, and circadian cortisol rhythm, respectively, and an increased abdominal fat volume. The lack of correlation between visceral fat and adrenal volume in men points to an additional influence of sex hormones.
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