Purpose: The association of thyroid related diseases and sex hormones with breast cancer (BC) is reported inconclusive results. 
 Objectives: study was designed to analyze the thyroid/sex hormone ratios BC patients. Methodology: TSH, T3, T4, estrogen, progesterone testosterone concentrations newly diagnosed patients (n=155) aged 30 75 years age-matched normal controls (n=75) were analyzed....

Despite decades of research, we do not know the functional significance of most sex differences in the brain. We are heavily invested in the idea that sex differences in brain structure cause sex differences in behavior. We rarely consider the possibility that sex differences in brain structure may also prevent sex differences in overt functions and behavior, by compensating for sex differences...

Introduction: Indirect results in humans suggest that chronic overfeeding decreases physical activity with few suggestions regarding what mechanism(s) may link overfeeding and decreased activity. The primary sex hormones are known regulators of activity and there are reports that chronic overfeeding alters sex hormone levels. Thepurpose of this study was to determine if chronic overfeeding alte...