Serena Williams has discussed a notable weight-loss journey in 2025, attributing part of her progress to a GLP-1 weight-loss medication and broader lifestyle changes. She reports shedding about 31 pounds, with public interviews and media coverage highlighting that the reduction followed durable efforts in diet, exercise, and postpartum health management. Below is a concise overview of her before-and-after context based on publicly shared statements.

Before

• Postpartum period after giving birth to her daughters marked a challenging phase for Serena’s weight management, despite consistent training and healthy eating. She described feeling frustrated by not reaching the weight or body composition she aimed for through training alone. This phase is commonly discussed as a time when many athletes recalibrate after major life changes.
• She continued to emphasize that maintaining peak athletic performance and health was a priority, even as weight goals proved elusive.

After

• Serena Williams has publicly stated that she lost around 31 pounds after starting a weight-loss medication (GLP-1). She characterizes the weight loss as improving energy and overall health, and she notes feeling lighter both physically and mentally.
• The transformation has been covered across multiple outlets, with reports indicating she attributes part of her progress to medical support in addition to ongoing diet and exercise routines. She has also shared that she felt more energetic and comfortable in her body as a result.
• Public appearances and social-media posts since the announcement show a slimmer silhouette and ongoing commitment to health and wellness, consistent with a broader message about women's health and aging gracefully.

Notes and cautions

• The exact GLP-1 product was not publicly disclosed in all reporting, and medical decisions like this are personal and private. When discussing weight-loss medications, it’s important to consider medical guidance from a clinician and to understand that results can vary.
• Serena’s public discussions emphasize that weight loss was one part of a holistic health approach, rather than a sole shortcut, and that prior postpartum changes influenced her health journey.

If you’d like, I can pull together a timeline of her public statements and summarize the key quotes from interviews, or compare her experience with broader industry context on GLP-1 weight-loss therapies.