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Introducing Mariza

Your personal online dietician at BetterEat.

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BetterEat - Personalised Precision Nutrition Therapy

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Are you on a long waiting list for an NHS Dietician? Are you looking for ways in which you can benefit your health through nutrition? Here at BetterEat, you will have access to a personal Registered Dietitian to assess you and develop your expert-tailored protocol and consult with you to help you achieve your health goals and improve your well-being. 


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Your Path to Holistic Nutrition Starts Here

With over 30 years of experience working in a myriad of clinical settings, you can be confident that the holistic approach to nutrition you will have access to when you book your consultation with BetterEat registered dietician consultation,  can help improve health outcomes - as it has for thousands of clients in the past. Whether you are on a long NHS waiting list, or are seeking an online dietician independently, we are here to help. 





Speak with Mariza today

Contact us today on 07457 405053 to talk about how improving your nutrition can improve your health.

You can speak to us via WhatsApp, get in touch via our contact form, or leave a message if you prefer.

Talk to Mariza



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One-to-one online nutrition coaching

BetterEat was founded by Mariza Louw B.Sc (Hons.) US RD(SA) RD(UK) more than 30 years ago. As a Nutritional Diagnostician and currently also an Assistant Professor at the University of Warwick, I offer high-level expertise to assess nutritional status and the impact this may have on your health or treatment response. As a registered online dietician, I can also recommend specialised nutrition to optimise medical treatment and recovery.

 Mariza Louw reading a book while holding her glasses in her right hand, with a stack of health books next to her

How the sessions work

Your online nutritional journey begins with a one-to-one consultation, gauging what your needs are. It entails a a detailed look at lifestyle, diet, family history, prescription medication, supplementation, recent blood tests, as well as medical diagnosis.

Addressing what you're missing out on, and how to make improvements, both immediate and long-term, can lead to significantly improved outcomes. From there, we can arrange ongoing appointments with me as specialist online dietician to help devise therapeutic nutrition prescriptions and assistance with the steps to help you make desired changes and further revise and improve your nutrition plan on an ongoing basis. Further testing may be indicated and you will receive guidance to support this if required. 


More on Our Sessions






Good health starts with great nutrition

Having a dietary approach that suits your personal nutritional needs is vital for so many aspects of life. From learning and mood or depression, to injury or post-surgical recovery, sleep, exercise, or diagnosis of a condition or disease, having an optimal and tailored dietary approach is highly beneficial. If you think your life could benefit from nutrition intervention or an improved diet, or if you are waiting for nutritional advice from your health service, book an appointment with me, Mariza, here.


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From Orton-on-the-Hill to Global Reach

Based in Orton-on-the-Hill since 2022, and serving clients online globally, as an online dietician, I  specialise in helping people who may not know where to start to understand particular symptoms they experience or struggle with, for example, the following health conditions: obesity, diabetes, hormonal imbalances, gastro-nutrition, mental health and/or depression, general fatigue or low energy, skin conditions, optimising vegan and vegetarian eating approaches and many more.

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Book your first online appointment here.

We can also arrange local, face-to-face appointments if you are in the Midlands.

Book with Mariza




About Mariza

Professional Background

Mariza now has 30+ years of experience and expertise as a registered online dietician, using nutrition therapy to treat a spectrum of diseases and conditions using medical nutrition therapy and promote a personalised health and wellness approach.


Her specific areas of expertise include complex nutritional deficiencies, obesity, diabetes, hormonal imbalance, gastro-nutrition, mental health and personalising nutrition through appropriate physical assessments, biochemical analysis, genetic and functional testing.



She is registered with the Health Care Professions Council (HCPC) and is a Member of the British Dietetic Association. 


She is currently an Assistant Professor at the University of Warwick, teaching across various courses offered by the Medical School. 





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I can help you if

  • You have diabetes (Type 1 and 2), or are at risk of developing it or have a strong family history
  • You have digestive conditions causing discomfort or unwanted symptoms or affect nutritional intake
  • You wish to facilitate recovery from surgery or illness
  • You wish to improve your sporting performance or fitness levels

  • You are experiencing depression
  • You would like to explore nutrition as a means to improve your wellbeing or reduce risk if you have a strong family history of e.g. cancer or Alzheimer's disease
  • You have a history of weight management issues
  • You struggle with infertility, peri-menopausal or menopausal weight gain


More on our Approach





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Expertise and Approach

Nutritional Diagnostician 

Using both investigative assessment and traditional assessment methods, she is able to diagnose and treat nutritional deficiencies and nutrition-related symptoms associated with disease or diagnosed conditions.

Targeted Nutrient Repletion

Targeted nutrient repletion and supplementation can  help manage conditions and improve outcomes.

Nutrient-Drug Interactions

As registered dietitian, I am qualified to consider and manage nutrient -drug interactions. When you book an online dietitian service, this will automatically also be considered as part of your assessment. 




Contact BetterEat to explore nutritional therapy as a means of improving recovery and outcomes from a wide range of conditions.

Get in Touch





Frequently Asked Questions


What does a Registered Dietitian do, and how can I help you?

This is a regulated health profession - very much like physiotherapy and medicine.

As a health professional trained to be proficient in the nutritional treatment and management of both disease conditions as well as the application of 'general' health and wellness, I have an in-depth knowledge of the impact of nutrition through all the life stages.

As part of the process of assessment and prescribing, I will draw on the changes humans experience as they go through life. My expert knowledge is based on an in-depth understanding of human physiology, pathology (how diseases develop), biochemistry (the chemistry inside your body) and genetics. Treatment will span the spectrum of the physical aspects of an individual's health, as well as psychological, lifestyle, and potentially environmental interactions.

Through a personalised approach, you will have access to targeted guidance and this will support your health and wellness goals and optimise the treatment of a disease or condition.

How can I, as an online dietitian, assist with weight management?

Unlike a weight loss club or app-driven weight loss program, addressing complex weight management issues requires an inside-out approach. Your weight loss journey should start with a thorough investigation and understanding of the underlying drivers contributing to your weight problems. Once the reasons for your struggles have been identified, a customised approach can be developed.

Depending on what you choose, this program may include practical help and guidance or signposting to the latest technology that will help and support your journey. You may be someone who genetically requires continued focus or perhaps a change in the type of exercise you do or what you choose to eat for breakfast. Perhaps your overall intake is too low, or medication may be influencing your metabolism. Once a nutritional diagnosis has been made, you will be able step outside of an endless cycle of dieting and deprivation. You can find a new way of eating that can work for you.

Do I need a dietitian if I don't have any specific health issues?

Absolutely! Nutritional therapy isn't just for individuals with a confirmed diagnosis or health concerns. Optimising nutritional quality can help anyone looking to improve their diet for better overall health, energy levels, and performance. Whether you want to enhance your athletic performance, improve your mood, or simply adopt healthier eating habits, a holistic dietitian can provide valuable guidance.

Learn more about how improved nutrition can help your health and wellbeing here on Our Approach page.