Weight Loss and wellness

About WW

WW is a holistic, digital, virtual and in-person weight loss and wellness solution designed to help employees build healthy habits for real life. Combining nutrition and behavior change science, WW empowers members to eat healthier, move more, shift their mindset and improve sleep—all through a personalized, scientifically-proven program that is powered by community and always-on support, with a human-first approach. WW partners with employers and payers to help their communities achieve sustainable, long-lasting change.

WW Website

The Ecosystem outcome

Castlight’s Ecosystem simplifies the member experience and maximizes engagement by connecting health and wellbeing programs all in one place and leveraging deep personalization to promote the right programs to the right people at the right time. By working with our partners to create a cohesive member experience, together we drive better value for our shared clients.  

Reach the right people



Increase in utilization

Sustain engagement



Monthly return rate

Bend the healthcare cost curve



Lower medical spend trend year-over-year

Deliver an outstanding experience


Net Promoter Score

Deep integrations

Real-time two-way data exchange

WW is connected to the Castlight platform via a deep, data exchange integration. As members engage with WW, they earn points in Castlight for completing specific micro-actions, like logging meals and exercises, which also helps power Castlight’s personalized recommendations. Example micro-actions are shown.

Access resources to inform healthy eating habits.

Track meals using WW’s points system.

Find workouts for all fitness levels and log activity.

Explore the Castlight Ecosystem

Proudly partnering with best-in-breed digital health solutions that are helping members stay healthy, manage conditions, and access care.