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Angelica Brandelius

MD, PhD, Certified Fitness & Medical Trainer

Dr. Angelica Brandelius, MD, PhD, is a licensed physician and certified medical trainer with a background in immunology, clinical research and more than 15 years of experience in exercise and health. At Yazen, she develops digital solutions that help people build and maintain an active lifestyle.

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Dr. Angelica Brandelius earned her medical degree from Lund University and holds a PhD in Medical Science in immunology. She is also a Certified Personal Trainer and Certified Medical Trainer through The Academy, where she bridges medicine and exercise by tailoring physical activity for individuals with conditions such as type 2 diabetes, overweight and obesity, and cardiovascular disease.

With more than 15 years of experience at SATS, the Nordic region’s largest fitness chain, she has led a wide range of training concepts – from yoga and running to strength training and senior fitness – while continuing her professional development through Les Mills programmes, yoga certifications and studies in sports psychology at Malmö University.

At Yazen, she develops digital solutions that empower people to start and sustain an active lifestyle, always with a focus on individual needs and circumstances.

Articles by

Angelica Brandelius

Mounjaro KwikPen – how the pre-filled injection pen works

KwikPen is a pre-filled multi-dose pen from the pharmaceutical company Eli Lilly, used to administer the medication Mounjaro. This type of pen is designed to facilitate regular dosing during medical weight loss and the treatment of type 2 diabetes. Here we go through how to handle the pen safely – from preparation to correct storage – to ensure your treatment works optimally.

Tired and Gaining Weight? Common Causes and What You Can Do

Lorem ipsumDo you recognise the feeling of being tired all the time while simultaneously gaining weight, without understanding why? You are not alone. Many people find that their body feels heavier and everyday life becomes more demanding when their energy is insufficient. It can be both frustrating and worrying, but there are often explanations for why this happens.

Medical treatment or bariatric surgery: a new era in obesity treatment

The choice between bariatric surgery and medical treatment has changed alongside the development of new, effective medications. Today, modern GLP-1 and GLP-1/GIP receptor agonists can provide significant weight loss that, in some cases, approaches the results previously achieved primarily through bariatric surgery. Here, we look at both options from a medical perspective and describe their effects, risks, and benefits.

I’ve tried everything – why am I not losing weight?

Not losing weight despite feeling like you are doing "everything right" is rarely due to a lack of discipline. The body's biology and hormonal systems play a central role in regulating body weight and can counteract weight loss.

To achieve sustainable results, it can therefore be valuable to understand how appetite regulation and individual circumstances affect weight, as well as which evidence-based treatment options are available.

Semaglutide or Tirzepatide – which is more effective for weight loss?

Semaglutide and tirzepatide are both well-documented medications for medical weight loss. In clinical studies, tirzepatide has shown a greater average weight loss than semaglutide, but individual efficacy, tolerability, and treatment choices vary. The choice of treatment should always be based on an individual medical assessment.

Golden dose Mounjaro – safety, myths and user changes

The concept of the “Golden dose” for Mounjaro refers to the residual liquid that may remain in a KwikPen after the intended doses. Advice on using this as an extra dose is spreading on social media, but healthcare providers advise against it because the dose is not quality-assured. Extracting residual liquid can lead to incorrect dosing and increased risk of side effects. Changes in how the medication is provided aim to strengthen patient safety.

Golden dose Wegovy – myths and safety

The term “Golden dose” refers to the residual liquid that may remain in a Wegovy pen after the intended doses. Advice on using this as an extra dose is spreading on social media, but healthcare providers clearly advise against this. There is a risk of incorrect dosing as well as a risk of contamination when manipulating the pen outside of its intended use.

Low Metabolism: Weight and Diet

Many who struggle with their weight wonder if a low metabolism could be an explanation. In practice, there are usually several underlying causes for weight challenges, where metabolism is one of several factors. Metabolism plays a central role in how the body uses energy, but the connection between low metabolism, weight, and diet is often more complex than one might think.

What should I weigh at my age? What science says

Wondering what you should weigh at your age? Many people look for weight charts to find an ideal weight, but a healthy weight cannot be determined solely by your age or height. Body composition, muscle mass and where fat is stored are often far more important than the number on the scale. Read what science says about age, BMI and how to find your unique healthy weight.