Associations between socioeconomic status and catecholamine levels vary by acculturation status in Mexican-American women.

BACKGROUND: Lower socioeconomic status (SES) is associated with poorer health, possibly through activation of the sympathetic nervous system. PURPOSE: This study aimed to examine the association between SES and catecholamine levels, and variations by acculturation. METHODS: Three hundred one Mexican-American women underwent examination with a 12-h urine collection. Analyses tested associations of SES, acculturation (language and nativity), and their interaction with norepinephrine (NOREPI) and epinephrine (EPI). RESULTS: No main effects for SES or the acculturation indicators emerged. Fully adjusted models revealed a significant SES by language interaction for NOREPI (p< .01) and EPI (p< .05), and a SES by nativity interaction approached significance for NOREPI (p= .05). Simple slope analyses revealed that higher SES related to lower catecholamine levels in Spanish-speaking women, and higher NOREPI in English-speaking women. Although nonsignificant, similar patterns were observed for nativity. CONCLUSIONS: Associations between SES and catecholamines may vary by acculturation, and cultural factors should be considered when examining SES health effects in Hispanics.

Domains of chronic stress, lifestyle factors, and allostatic load in middle-aged Mexican-American women.

BACKGROUND: Little research has examined how chronic stress in different domains relates to allostatic load (AL). PURPOSE: We examined the relationship between multiple chronic stressors with AL, and evaluated lifestyle factors as possible mediating factors. METHODS: Three hundred one middle-aged Mexican-American women underwent a physical exam and completed measures of lifestyle factors and chronic stress in eight domains. A composite of 12 neuroendocrine, metabolic, cardiovascular, and inflammatory markers represented AL. RESULTS: Chronic work, financial, and caregiving domains related to higher AL scores after adjusting for covariates and other stressors. Lifestyle factors made little contribution to the association between stressors and AL. CONCLUSIONS: Chronic work, financial, and caregiving stressors are associated with physiological dysregulation in Mexican-American women. This study is among the first to examine multiple domains of chronic stress in relation to AL, in a population that has been understudied in research concerning stress and health.