Welcome to #OurEntrepreneurs, a series where we meet our innovators and uncover what inspired them to create change. Today, we’re delighted to introduce Elizabeth Nassuna, joining us from Imperial College Healthcare NHS Trust.

Tell us a bit about yourself 

I am a Fracture Liaison Specialist Nurse at Imperial College Healthcare NHS Trust, specialising in osteoporosis and secondary fracture prevention. I work at the intersection of frontline clinical care, digital innovation and responsible AI implementation, with a focus on developing practical solutions that improve patient understanding, support clinical workflows and can scale safely across healthcare.

I am the creator of CalciTrack, a dietary calcium tracker for patients and clinicians, and I’m passionate about clinician-led innovation that is built with real-world care in mind.

Tell us about your innovation  

CalciTrack is a digital dietary calcium tracker designed to help people understand whether they are meeting their calcium needs through food, and to support clinicians in having clearer, more personalised bone health conversations. It was developed from a gap I saw in osteoporosis and fracture prevention practice: dietary calcium is fundamental to bone health, yet assessment is often inconsistent, time-constrained or difficult for patients to translate into everyday choices.

The impact I hope it will have is broader than a single clinical interaction. CalciTrack promotes a clear diet-first approach, supporting health promotion and primary prevention of poor bone health across the population. For those already at risk of fragility fractures, it can strengthen secondary prevention by helping identify low dietary calcium intake and supporting safe, appropriate supplementation discussions with healthcare professionals where needed.

CalciTrack addresses one important, modifiable part of this prevention challenge: helping people understand and optimise their dietary calcium intake earlier, before poor bone health contributes to avoidable fracture risk. In NHS practice, dietary calcium assessment can be variable and difficult to complete consistently within time-pressured consultations. This creates a gap in both population health promotion and targeted prevention for people already identified as being at higher fracture risk.

By making dietary calcium assessment more accessible, practical and scalable, CalciTrack aims to support primary prevention of poor bone health, strengthen secondary fragility fracture prevention, and enable more informed, diet-first conversations about when supplementation may or may not be needed.

Ultimately, I want CalciTrack to make bone health advice more accessible, practical and actionable, helping reduce avoidable risk factors for fragility fractures while supporting clinicians with a simple, scalable tool grounded in real patient and service needs.

Why did you join the programme and how do you hope it will support you?

I first heard about the NHS Clinical Entrepreneur Programme through LinkedIn, where I saw previous fellows sharing their experiences and the impact the programme had on developing their ideas.

I applied because I had already started building CalciTrack in response to a real gap I was seeing in clinical practice, but also because I have developed other digital tools and frameworks that I am keen to explore, strengthen and take further. I wanted to better understand how to turn clinician-led ideas into sustainable, scalable innovations with wider NHS and population health impact.

I hope the programme will help me develop the skills, confidence and networks needed to move from identifying problems in practice to building sustainable solutions that can create real impact. I am particularly keen to strengthen my understanding of innovation pathways, commercialisation, intellectual property, funding and how to scale ideas responsibly within and beyond the NHS. I also hope it will support me to refine CalciTrack and explore the wider potential of other digital tools and frameworks I have developed, while learning from mentors and peers who can challenge my thinking, broaden my ambition and help me translate frontline insight into meaningful, investable innovation.

I am most looking forward to learning from the programme’s mentors, experts and fellow entrepreneurs, developing my commercial and implementation thinking, and being part of a community of people who are equally passionate about turning frontline insight into meaningful change.

What are your ambitions for the next year?

Over the next year, I hope to develop CalciTrack further and explore turning it into an app, either as a standalone tool or, if appropriate, linked to wider NHS App health promotion resources. My ambition is for it to support population bone health, fragility fracture prevention and accessible, diet-first calcium guidance at scale.

I also want to use the programme to test and progress other digital tools and frameworks I have developed, strengthen my understanding of commercialisation, implementation and routes to adoption, and become more effective at taking frontline insight from problem recognition through to real-world impact.

More broadly, I hope to grow as a clinician entrepreneur and help demonstrate the value of healthcare professionals not only identifying problems in the system, but actively shaping practical, responsible solutions.

Why do you think innovation is healthcare is important?

Innovation is important in healthcare because the challenges facing patients, staff and services cannot always be solved by working harder within existing systems. We need new ways to prevent ill health, improve outcomes, reduce avoidable variation and make care more accessible, efficient and sustainable.

The most meaningful innovation often starts with people closest to the problem. Frontline healthcare professionals see where patients struggle, where pathways break down and where small changes could make a significant difference. When that insight is supported and developed well, it can lead to practical solutions that improve care in the real world.

For me, innovation is about turning lived clinical problems into responsible, scalable solutions that create better experiences and better outcomes for patients.

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