Specialist Registered Dietitian in Belfast Supporting Gut Health, Weight Loss & Hormonal Health

Weight Loss Programmes

Struggling with your weight and ready for a lasting change? At 121 Dietitian, our expert-led weight loss programs are designed specifically for you. With 30 years of specialist experience, Gillian Killiner RD helps you address not just your weight, but also the wider health risks linked to carrying excess weight.

Why lose weight with 121 Dietitian?

Carrying excess weight increases your risk of:

  • Heart disease
  • High blood pressure
  • Type 2 diabetes
  • High cholesterol
  • Hormonal imbalances (e.g. PCOS)
  • Infertility
  • Depression and anxiety
  • Gut health issues
  • Certain cancers

The good news? These risks can be reduced – and often reversed – with personalised nutrition and lifestyle support from a specialist registered Dietitian.

Why our programmes are different

Forget fad diets and quick fixes. They don’t work – and worse, they can damage your long-term health.

At 121 Dietitian, we:

  • Use evidence-based strategies tailored to you
  • Consider your food preferences, cooking ability, health status, and goals
  • Provide support that’s realistic, sustainable and enjoyable
  • Offer expert advice based on decades of clinical experience

Our clients regularly report improvements in energy, sleep, digestion, mood, and – most importantly – achievable and lasting weight loss.

Read our Google Reviews and visit us on Instagram for real-life success stories.

is this you?

You’re likely a great candidate for our program if you:

  • Are over 40
  • Are carrying excess weight
  • Have high blood pressure, diabetes, or high cholesterol
  • Smoke or have a family history of heart disease
  • Are using GLP-1 medications (Ozempic, Mounjaro, Wegovy)

We specialise in helping people with complex needs or long-term health conditions feel in control again.

what you'll receive

Each weight loss package includes:

  • One-to-one support with Gillian Killiner RD
  • Fully personalised nutrition plan
  • Recipes and shopping lists
  • Evidence-based behaviour change techniques
  • Exercise and activity guidance
  • Supplement and blood test advice (if required)
  • Ongoing accountability and motivation
 

We offer 4-month, 6-month, and 12-month packages. We’ll help you choose the right one based on your weight loss goals and health needs. 

Need more support? We can arrange that too!

On Ozempic, Mounjaro, or Wegovy?

We offer tailored nutrition support to maximise the benefits of GLP-1 medications while protecting your lean muscle, supporting your metabolism, and reducing side effects.

Check your BMI today

Use our BMI Calculator to find out where you stand and what your healthy weight range should be.

need help choosing the right plan?

Book a discovery call or send us a message – we’re happy to guide you with no pressure. You deserve to feel your best, and we’re here to make that happen.

Read our latest client testimonials to see the life-changing impact of our support.

Weight Loss for Life Programme

If you are struggling with your weight and want a structured, supportive approach to lasting change, our Weight Loss for Life Programme is designed for you. We focus on sustainable weight management rather than quick fixes. Our goal is to help you achieve long-term results that fit your lifestyle.

How This Weight Management Programme Works

Weight Loss for Life PLUS Programme

If you require longer-term support to manage your weight and create lasting change, the Weight Loss for Life PLUS Programme provides extended guidance over 12 months. This option offers additional structure, accountability and ongoing professional support.

How This Weight Management Programme Works

Vegan Weight Loss for Life Programme

For those following a plant-based diet, we also offer a dedicated Vegan Weight Loss for Life Programme. This provides the same expert, personalised dietetic support as our standard programme, tailored specifically to a vegan lifestyle. To find out more, get in touch and a member of the team will be happy to help.

GLP-1 Nutrition Support

We offer two levels of GLP-1 nutrition support depending on your needs and budget. Both programmes are designed to complement your medication and help you build sustainable, long-term habits around nutrition, activity, sleep and stress.

Full Nutrition Programme for GLP-1 Injections (Ozempic, Wegovy, Mounjaro)

Optimising Long-term Health With Expert Guidance

As a specialist Dietitian with 30 years of experience, my goal is to help you achieve lasting health through personalised and sustainable nutrition. If you are using GLP-1 injections such as Ozempic, Wegovy or Mounjaro for weight loss or metabolic health, this 5-hour deep-dive programme complements your medication. Rather than offering a quick fix, we focus on structured, long-term weight management support.

Programme Features

Personalised Nutrition Plans: Tailored to your tastes, lifestyle, activity level and budget. Together, we create a balanced and enjoyable eating plan that fits your everyday routine without unnecessary restriction.

Recipes and Shopping Lists: You receive easy-to-follow recipes and structured shopping lists. As a result, healthy eating becomes simple, practical and sustainable.

Expert Guidance: Throughout your GLP-1 journey, I guide you through dietary adjustments, side-effect management and lifestyle strategies. We refine your approach as your body adapts to the medication.

Long-Term Focus: This programme prioritises lasting health. Therefore, we build sustainable habits that support weight management, metabolic health and overall wellbeing for years to come.

Comprehensive Support: Beyond diet, we address activity, sleep and stress. In doing so, we ensure you support your body in every possible way.

Across five appointments, you receive expert support to help you lose weight safely and improve your overall health. More importantly, we create a plan that fits your life and promotes long-term success.

Mini Nutrition Programme for GLP-1 Injections (Ozempic, Wegovy, Mounjaro)

If you are looking for a more accessible starting point, our Mini Programme offers focused, expert dietetic support to complement your GLP-1 medication. With 3 hours of personalised guidance, this programme helps you get the most from your treatment by building habits that last well beyond it.

Programme Features

Expert Guidance: We support you throughout your GLP-1 journey, helping you adjust your diet, manage side effects and refine your approach as your body adapts to the medication.

Long-Term Focus: Together, we build sustainable habits that promote balanced weight, improved metabolic health and overall wellbeing for years to come.

Comprehensive Support: We look at the bigger picture, addressing not only nutrition by also activity, sleep and stress – ensuring your body has the support it needs in every area.

ready to start your journey?

Don’t wait to take control of your health. With expert guidance, you can lose weight, improve your health markers, and enjoy your life again.

121 Dietitian
Need help finding the right programme?