04/17/2026
Weight gain after a breast cancer diagnosis is very common—affecting up to 60% of patients—and it’s not simply about diet or willpower. 💙
Hormonal changes, treatment side effects, fatigue, stress, and sleep disruption can all play a role in how the body stores and uses energy.
Instead of focusing only on weight, experts recommend building a strong foundation for overall health:
• Strength training to maintain muscle
• Balanced nutrition with protein and fiber
• Plant-forward eating patterns
• Prioritizing sleep and stress management
Small, sustainable changes can make a meaningful difference.
If you’d like additional support, the Simms/Mann Center offers nutrition and integrative care resources for patients navigating treatment and survivorship. Find it here:
Breadcrumb Home Simms Mann How to deal with weight gain after a breast cancer diagnosis Sleep, resistance training and whole foods are important, says UCLA Health dietitian Emma Veilleux. Dietitian Emma Veilleux, right, provides nutritional consultation for patients of the Simms/Mann UCLA Center for...