The association between testosterone, estradiol and their ratio and mortality among US men

[Mito]

Abstract

While studies have suggested that testosterone is associated with a man's health, the relationship with other sex steroids remains uncertain. The current study aimed to investigate the association between sex steroids (i.e. testosterone, estradiol and the testosterone:estradiol ratio) and mortality in a representative sample of 1,109 US men. Three NHANES continuous cycles (1999-2000, 2001-2002, 2003-2004) were included in our study. Serum testosterone and estradiol levels were evaluated along with sociodemographic, lifestyle and health factors. Cox proportional hazards models were used. The adjusted risk of death for men with low testosterone levels was 1.66 (95% CI = 1.00-2.74, p = .05). The adjusted risk of death for men with abnormal estradiol levels was 0.96 (95% CI = 0.48-1.91, p = .91). The adjusted risk of death for men with low testosterone to estradiol ratio was 1.27 (95% CI = 0.82-1.97, p = .88). Relevant lifestyle and health factors significantly attenuated the associations. The adjusted risk of CVD-related death for men with low testosterone levels was 2.43 (95% CI = 1.07-5.50, p = .03). In conclusion, a significant association between testosterone and mortality and testosterone to estradiol ratio and CVD-related mortality was identified.

The association between testosterone, estradiol and their ratio and mortality among US men - PubMed

While studies have suggested that testosterone is associated with a man's health, the relationship with other sex steroids remains uncertain. The current study aimed to investigate the association between sex steroids (i.e. testosterone, estradiol and the testosterone:estradiol ratio) and...

pubmed.ncbi.nlm.nih.gov

 

[ecstatichamster]

Thank you. Similar finding:

Low Serum Testosterone and Estradiol Predict Mortality in Elderly Men

Context: Age-related reduction of serum testosterone may contribute to the signs and symptoms of aging, but previous studies report conflicting evidence ab

academic.oup.com

Context: Age-related reduction of serum testosterone may contribute to the signs and symptoms of aging, but previous studies report conflicting evidence about testosterone levels and male mortality. No large prospective cohort study has determined a possible association between serum estradiol and mortality in men.

Objective: The main objective was to examine the association between serum testosterone and estradiol and all-cause mortality in elderly men.

Design, Setting, and Participants: We used specific gas chromatography-mass spectrometry to analyze serum sex steroids at baseline in older men who participated in the prospective population-based MrOS Sweden cohort (n = 3014; mean age, 75 yr; range, 69–80 yr).

Main Outcome Measure: All-cause mortality by serum testosterone and estradiol levels.

Results: During a mean follow-up period of 4.5 yr, 383 deaths occurred. In multivariate hazards regression models, low levels (within quartile 1 vs. quartiles 2–4) of both testosterone [hazard ratio (HR), 1.65; 95% confidence interval (CI), 1.29–2.12] and estradiol (HR, 1.54; 95% CI, 1.22–1.95) associated with mortality. A model including both hormones showed that both low testosterone (HR, 1.46; 95% CI, 1.11–1.92) and estradiol (HR, 1.33; 95% CI, 1.02–1.73) predicted mortality. Risk of death nearly doubled (HR, 1.96; 95% CI, 1.46–2.62) in subjects with low levels of both testosterone and estradiol compared with subjects within quartiles 2–4 of both hormones.

Conclusions: Elderly men with low serum testosterone and estradiol have increased risk of mortality, and subjects with low values of both testosterone and estradiol have the highest risk of mortality.