The Power of PEN
As a third-year dietetics student one of the most helpful and valuable tools during my studies so far has been

PEN. PEN stands for ‘Practice Evidence-based nutrition’. It is a global collaboration between the British Dietetic Association, Dietitians Association of Australia and Dietitians of Canada. It is a resource for dietitians and student dietitians. Its content is written by dietitians for dietitians, which really keeps the focus relevant.
What is PEN?
PEN is a resource where you can find out about the most recent evidence-base on conditions, diseases and their nutritional management. As busy students it can be overwhelming trying to access and critically evaluate all the information which is out there. It can seem like there are not enough hours in the day for completing your assignments, let alone making sure you are basing them on the most current research. This is where PEN can be of great use to dietetics students. It explains disease and dietetic care in real terms, which helps give you the confidence to develop your clinical and dietetic knowledge base on your road to becoming an RD!
Advice for first-year students
If you are a first-year student, you may be facing your first assignments and perhaps feeling unsure of where to gain credible (and understandable) information; my advice would be – start at PEN! Access to PEN is free for BDA student members and I would highly recommend using it as soon as you can. The site is so simple to use. You only have to type key search words into the home page and you can start. The language in PEN communicates the science and dietetic management in a practical way. By your second and third year of study, PEN will really have proven its worth!
Empowering students
The evidence in PEN is summary-graded either by PEN’s own grading system in strength of evidence (from A-D) or by using the GRADE system (used by many other organisations such as NICE and WHO) which helps to develop your critical skills in evaluating the most recent research and evidence. It can sometimes be confusing for dietitians and the general population to trust the information (and misinformation) which is out there, and so it helps to have a source of reliable information to refer to.
With so many dietary fads cropping up all the time as well as new nutritional advice, you may find that patients or even friends and family start asking your opinion on whatever nutrition topic is in the news (think coconut oil, gluten free or the keto diet). PEN has a subheading for trending topics where it looks at what is being discussed on nutrition in the media and then looks at the evidence base. This really empowers you as a student to know what’s going on in your field, and what messages people are getting.
PEN for placements
On my first A placement, a good wi-fi connection and some time between ward visits meant that I could read through all the background information on PEN before visiting a new hospital department. During placement, the newness of each day and tackling new experiences can leave you quite overwhelmed, so it was a great help to be able to refer a trusted source, which gave the backgrounds of disease simply. Also during placement, it is likely you will see conditions or dietetic treatments you have yet to cover at university. This is where knowledge pathways come in useful. I spent some time shadowing a paediatric dietitian who worked with children who had recently been diagnosed with type 1 diabetes. Using the PEN knowledge pathway background information, I found out about carb counting and how it can be used as a meal planning strategy.
In this situation PEN gave me the confidence to go into new situations with a basic understanding of what is required from a patient and dietitian. Another helpful tip would be to check out the related tools and resources in the knowledge pathway. It is a great place to find information for group education sessions which you may need for university assessments.
As you progress through your dietetics degree another helpful section of PEN is the practice questions; these answer reallife clinical situations which you are likely to see in hospital placements. This gives you some clear grounding on the evidence base around current practice. A ten-minute scan of the update and reviews and PEN can really keep you in the loop of what is happening in the world of dietetics.
With over 20,000 PubMed nutrition citations added annually, it can seem an impossible task to keep up-to-date but PEN is a great tool to help you be the most informed student dietitian you can be.
Your future career
As aspiring dietitians we want to be well informed about the current research and be aware of trends that our patients or clients may be concerned with. PEN is a great tool to scan through current topics and these are updated and reviewed on a regular basis.
I have found using PEN invaluable. I can’t stress just how vital it is to student learning and progress. Using it regularly will help you throughout your future dietetic career and not just through your studies.
Written by,
Leah Paulden
3rd year Nutrition & Dietetics student
University of Nottingham
PEN eNews Editor’s note:The PEN system is used in universities around the world through
PEN Site licenses. Dr Judy Bauer has suggested that the PEN System can be used in university settings as follows:
- Key program reference for nutrition & dietetics
- Practice questions/answers
- Toolkits
- Professional & consumer resources
- Capstone courses - Evidence-based practice/Translational Research
- Evidence-practice gaps
- Training materials
- Developing content
- Demonstrating commitment to evidence-based practice
- Sharing PEN e-news
- Developing blogs, newsletters
Colleagues at Acadia University had this to say about how they use the PEN System to support learning:
“I love the student assignment guide – partnering with PEN on assignments like a Trending Topics Article Analysis gives learners the opportunity to apply concepts from class while contributing to professional knowledge translation. I see this as a significant benefit not just to their learning, but their professional development as well.”
Sarah Campbell Bligh (former) Faculty, School of Nutrition and Dietetics, Acadia University
“Students are required to locate relevant sources from peer-reviewed literature, grey literature, and PEN. I advise them that PEN should be their first stop. I have heard students ask so many times that I have lost count, “What did people do before PEN?”
Dr Catherine Morley, Professor, School of Nutrition and Dietetics, Acadia University.