Any illness can alter thyroid function tests, causing a fairly consistent decrease in total T4 and T3 concentrations in proportion to the severity of illness. (merckvetmanual.com)
While Nakashima et al. (48) report consistent decreases in testosterone among patients from pre-anesthesia to 7 days post-prostatectomy, there are no antecedent reports of decreases in testosterone or PSA during the presurgical period. (nutritionfacts.org)
Keeping things consistent decreases anxiety for older cats, helps those with senility remember routes to food and litter boxes better, and is easier for a cat that may be losing her sight. (cathealth.com)