In fairness we need to examine underlying studies for at least two confounding factors: First, did they measure estradiol with minimal cross-reactivity? Any study that's measuring C-reactive protein along with estradiol is going to make higher levels look bad. Second, did they account for those who are overweight or obese? These conditions raise estradiol through higher aromatase, but they will correlate independently with higher mortality....
The following excerpt is from a study published in 2010:
The clinical consequences of higher E2 levels and higher E2:T ratios in older men remain poorly understood. In longitudinal studies in older men, higher E2 levels have been associated with adverse outcomes such as stroke (38) and cognitive decline (39). In cross-sectional studies, higher E2 levels have been associated with the increased risk of metabolic syndrome (40) and type 2 diabetes mellitus.
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