Abstract Summary
Objective
To assess whether ashwagandha (Withania somnifera) contributes to weight gain by evaluating its effects on stress regulation, metabolism, appetite, and body composition.
Context
Ashwagandha is an adaptogenic herb traditionally used in Ayurvedic medicine to support stress resilience and metabolic balance. As its use has expanded in modern wellness practices, questions have arisen regarding its potential impact on body weight. These concerns are primarily linked to its cortisol-modulating properties and its reported effects on physical performance and muscle development.
Methods Used
Approach
A focused review of randomized controlled trials and observational studies was conducted to examine the relationship between ashwagandha supplementation and changes in body weight and body composition, with attention to hormonal and metabolic markers.
Data Collection
Peer-reviewed studies were sourced from PubMed, ScienceDirect, and Google Scholar. Outcomes analyzed included body weight, body mass index, fat mass, lean muscle mass, cortisol levels, and reported adverse effects, with emphasis on studies using standardized ashwagandha root extracts.
Researchers' Summary of Findings
Impact on Health
Current evidence does not support ashwagandha as a direct cause of fat-related weight gain. In individuals experiencing chronic stress, cortisol reduction may normalize appetite and reduce stress-associated eating behaviors, contributing to weight stability. In physically active individuals, modest increases in body weight observed in some studies are primarily associated with gains in lean muscle mass rather than increases in adipose tissue.
Health Implications
Ashwagandha’s influence on body weight appears to occur through regulation of the hypothalamic–pituitary–adrenal axis. By lowering chronically elevated cortisol levels, the herb may support healthier metabolic function and body composition. Ashwagandha is generally well tolerated, with mild gastrointestinal symptoms reported infrequently. Weight gain is not identified as a consistent adverse outcome in clinical research.
Sustainability
Ashwagandha is a drought-tolerant plant with low cultivation demands, supporting sustainable production. Its use aligns with plant-based, holistic health approaches that emphasize long-term metabolic and stress management.
DOI
10.1186/s12970-015-0104-9
