Optimal Nutrition

Optimise how you feel through the food you eat - in a way that works for you. Get in touch today!

I work with busy people who want to take control of their health, be in charge of their hormones, and manage life’s stresses - increasing your energy, boosting your immunity and helping you feel the best you can through the food you eat. We achieve this with personalised nutrition and lifestyle plans that are realistic and sustainable for your schedule and family, with practical tips to make sure you can make the change and feel the difference.

06/02/2026

𝗪𝗵𝗮𝘁 𝗺𝗮𝗸𝗲𝘀 𝗮 𝗾𝘂𝗮𝗹𝗶𝗳𝗶𝗲𝗱 𝗡𝘂𝘁𝗿𝗶𝘁𝗶𝗼𝗻𝗮𝗹 𝗧𝗵𝗲𝗿𝗮𝗽𝗶𝘀𝘁 𝗱𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝘁?

There is so much information online - AI-generated, influencer-led, sensational headlines. Eat this... Don't eat this... Take this supplement/powder/gummies... Only eat this…. Don’t eat….. Use this jab….

𝗛𝗼𝘄 𝗱𝗼 𝘆𝗼𝘂 𝗱𝗲𝘁𝗲𝗿𝗺𝗶𝗻𝗲 𝘄𝗵𝗮𝘁 𝗶𝘀 𝗿𝗶𝗴𝗵𝘁 𝗳𝗼𝗿 𝘆𝗼𝘂?

Qualified nutritional therapists consider an individual's health through diet, lifestyle and genetic factors. They are trained to identify and address imbalances in the body that might be contributing to a person’s experience of health.

Unlike the general dietary advice we are all bombarded with online and on our social media feeds, nutritional therapy focusses on evidence-based, personalised recommendations – 𝗯𝗲𝗰𝗮𝘂𝘀𝗲 𝗲𝘃𝗲𝗿𝘆𝗼𝗻𝗲 𝗶𝘀 𝗱𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝘁. It considers the unique needs of individuals, and tailors interventions in a way that works for the person.

BANT (British Association for Nutrition and Lifestyle Medicine) is the leading professional body for nutritional therapy, regulating the training, CPD and activities of its members. Working with a BANT-registered nutritional therapist ensures that our clients receive evidence-based, ethical and safe care. We adhere to strict codes of practice, and have to commit to ongoing education each year to keep up with latest research.

You want to make sure that what you are eating is the right thing for you, for your life stage, for your health condition. Whether it is perimenopause and future-proofing health, wanting to manage cholesterol levels or prediabetes with diet, support your gut health or IBS symptoms, what we eat can have a significant impact.

You can spend time trying to work it all out by looking online, with opinions from influencers and celebrities. Or you could work with a BANT-registered nutritional therapist to get bespoke, personalised advice with practical tips that work for you.

Want to find out more? Get in touch - I'd love to speak with you!
DM or visit https://www.optimal-nutrition.co.uk/contact

03/02/2026

Every month, subscribers to the Optimal Nutrition newsletter receive FREE, evidence-based nutrition advice and practical tips, directly to their inbox.

From topical information around increasing essential nutrients like zinc and antioxidants in your meals (vital for immune health), seasonal advice like the mineral powerhouses of root veg and frozen fruit, to research-based advice around foods for bone health and cholesterol (plus a lot more!), the newsletters are designed to be informative and accessible, focussing your attention on how the foods you eat can change how you feel, in an easy-to-read way.

If you would like to give it a try, click on the link below, or send a DM - the next issue is out this week. Did I mention it's free? Why not give it a go? 😊

www.optimal-nutrition.co.uk/subscribe

01/02/2026

Meat-Free Monday ideas (on a Sunday so you can prep!) Veganuary has just finished, but are you considering whether a little less meat might be good for you?

The health benefits of reducing meat was the topic of last months' Optimal Nutrition newsletter (sign up link in bio if you would like free nutrition tips directly to your inbox every month), and protein is one of the things to consider when opting for vegetarian dishes.

Why? For many reasons (satiety, essential amino acids, hormone regulation, repair to name a few), but an important role is to support our energy and balance our blood sugar - vital as we are waiting for the warmer days to come.

So check out these 3 protein-packed but meat-free ideas for a bit of inspiration this week - and let us know what's on your plate this week 🍽

30/01/2026

"I approached with a certain degree of 'scepticism'. How wrong …. With her expertise and personalised approach, I've experienced positive changes in my diet and lifestyle". BB, Optimal Nutrition client

When Brin came to me, he wanted to act on his recent blood tests, and avoid medication for later life, but still enjoy his semi-retirement without feeling restricted.

Is that possible? Absolutely.

What we did:
✅ Focus on waist size and blood tests as measurable metrics, not scales
✅ personalised plan so he could enjoy food without a fad diet
✅ evidence-based nutrition for metabolic conditions

After just 3 months
🌟 within range on all his blood markers
🌟 reduced his belt size by 2 belt loops
🌟 didn't feel like he had restricted himself significantly, just made achievable changes

This is what qualified, nutritional therapy looks like. Ready to talk about how it could work for you? Book a free call - https://bit.ly/OptNut_HealthReview

12/01/2026

Local to Saltdean, Rottingdean, Peacehaven, Ovingdean, Lewes?

Optimal Nutrition will be hosting Open Days this week at the gorgeous Saltdean Lido this week, and have some FREE Health Review slots available - a chance to discuss your health aims and challenges, find out some nutrition tips and advice, and how what you eat can change how you feel. If you want to know how food can support your health conditions, or want to change what your eating to make you feel better, but don't know where to start, book a time using this link to find out more!

https://bit.ly/LidoOpenDays

02/01/2026

Happy New Year!

Are you overwhelmed by social media, bombarded with supplement must-haves for 2026?

Perhaps you would like to know what exactly you need to nourish your body for your life stage and situation - but don't know where to start?

Would you like to break some habits, introduce some changes - and would love som some guidance and and advice on how to do so?

The end of a year and the start of a new one can give us the opportunity for reflection, to assess how things are, to plan for changes. What you eat can change how you feel - and should be based on science, relevant to you - and delicious too!

Take the first step and book a FREE 30-minute Health Review with me - we'll discuss what you would like to achieve and how personalised nutrition could work for you.

Book here - https://bit.ly/OptNut_HealthReview - you won't regret it!

15/12/2025

Don't just believe everything you read online. Evidence-based nutrition from me, Kathrin Leaver-Fielding, BANT-registered nutritional therapist about the nutrients we actually need this winter - and where to get them.

If you would like more science-backed nutrition tips, subscribe to my monthly newsletter (link in bio) The next one is out tomorrow. You can also book a FREE 2026 Health Review to discuss your health aims and how to achieve them - times for the new year available here - https://bit.ly/OptNut_HealthReview

02/12/2025

Love a ⭐⭐⭐⭐⭐ review - thank you Fran!

For me, it has to be about the science - applied to your personal health situation, and given with suggestions for how that looks like on your plate.

If you are fed up with one-size-fits-all nutrition advice, and want to find out how personalised nutrition could work for you, book a free chat today - https://bit.ly/OptNut_HealthReview

I am very easy to work with! 😀

12/11/2025

Literally any opportunity…….. 🐈‍⬛ 💻

10/11/2025

’s week ahead:
- write x3 client plans and deliver
- meet and onboard new client
- prep for Thursday’s Gut Health Talk at the
- send November’s newsletter (it’s free! www.optimal-nutrition.co.uk/subscribe)

For Luna the Cat/Head of People Management:
- stay out of rain
- resist temptation to sit on keyboard
- sleep

What are you up to this week?

07/11/2025

1 week to go!

👉🏼 Do you know there is a direct connection between our brains and our gut?
👉🏼 That our gut influences our immune system?
👉🏼 Buzz words around gut health are everywhere at the moment – microbiome, probiotics, bacteria, fibre, to name a few.

If you would like to know more about how what you eat can change how you feel, the importance of our gut for our wider health, and to cut through the noise and see what the evidence says about what foods can nourish us - with some delicious and practical tips - join me, BANT-registered nutritional therapist Kathrin from Optimal Nutrition next week.

Tickets available here 👉🏼 https://wegottickets.com/event/676579

Look forward to meeting you.

06/11/2025

Every day’s a school day!

Fab insight into BioCare’s seminar series “A Beautiful Mind”, understanding what makes a mind, nutrients to support emotional resiliance, neurodiversity and encouraging behaviour change - because everyone is different.

Prozac v saffron - who knew!

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Brighton And Hove

Website

https://linktr.ee/optimalnutrition

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