Peri-menopausal Women

Female life stages including premenopausal, perimenopausal, postmenopausal, are characterized by changing concentrations and patterns of hormones. The premenopause stage represents the reproductive years with normal menstrual cycles lasting between 21-35 days. The perimenopause stage is the beginning of the menopause transition and can last up to 10 years. During this transition, menstrual cycles become longer and irregular in length (7 days or longer). After 12 consecutive months with no period, the transition is complete into the postmenopause stage. Hormones that change across the lifespan are known to influence systems that regulate thirst, fluid balance, and sodium balance. Yet, fluid balance across life stages remains poorly understood, with no direct comparisons across all three life stages. The purpose of this study is to evaluate the effect of female life stage on rehydration with water and electrolyte solution after overnight fast and fluid restriction

The goal of this study is to better understand how an amylopectin chromium blend may influence whole body protein balance in women during midlife, when hormonal changes can adversely affect protein metabolism and muscle maintenance. Continuous glucose monitoring will also be used to assess glycemic control over a 24-hour period. The main questions the study aims to answer are: * Does the use of an amylopectin chromium blend in peri- and post-menopausal women help to support positive protein balance * Can the affect be achieved using a concentrated dose Researchers will compare the nutritional supplement to a placebo (amylopectin alone) to see if the amylopectin chromium blend can promote positive protein balance. A concentrated dose of the supplement will also be evaluated for comparative effectiveness. Participants will: * Consume the nutritional supplement (standard or concentrated dose) or placebo acutely after a short resistance exercise bout * Complete four in-person visits, including the single-day intervention Results from this research may help guide future nutritional strategies to support healthy aging, muscle function, and overall metabolic health.

This is an open-label, 3-arm clinical trial evaluating the short-term efficacy and tolerability of Qualia Perimenopause-a multi-ingredient dietary supplement formulated to support perimenopausal symptoms-in healthy women aged 40-55 who are symptomatic but not yet menopausal (menses within the past 12 months). Approximately 120 participants will be allocated across three parallel arms and will take 1 capsule once daily for 28 consecutive days. The primary outcome is between-group change from baseline to day 28 in menopause symptom burden measured by the total Menopause Rating Scale (MRS). Secondary outcomes include within- and between-group changes at days 14 and 28 in cognitive function (PROMIS Cognitive Function v2.0 - Short Form 8a), sleep disturbance (PROMIS), MRS subdomains (psychological, somato-vegetative, urogenital), overall MRS change, safety/tolerability (custom survey), and participant-reported product experience. All assessments are completed electronically at home at baseline, mid-intervention (day 14), and end-of-study (day 28), with a brief follow-up questionnaire; there are no in-person visits.