How a Dietitian Actually Shops for Food (And What That Means for You)

Healthy eating doesn't have to be expensive — and knowing what to prioritise makes all the difference. In this post, I share how I actually think about food shopping as a Registered Dietitian: the principles behind my choices, the mistakes most people make at the supermarket, and why budget and nutrition aren't the conflict most people think they are. Plus — the free guide that shows you exactly what I buy.

NUTRITION

5/10/20263 min read

This article provides general information only and is not a substitute for personalised medical, dietetic, or lifestyle advice.


I'm Sam — a Registered Dietitian with 15 years of experience, including over a decade in the NHS.

And I do my main shop at Aldi.
I don't say that as a disclaimer. I say it because it's the whole point.

Eating well doesn't require a premium supermarket, an expensive meal kit, or a fridge full of ingredients you'll use once and forget. It requires knowing what to prioritise, why it matters, and how to make it work on a real budget — week after week.

That's what this post is about. Not a prescriptive plan. Not a list of superfoods. Just an honest look at how a dietitian actually thinks about food shopping — and what you can take from it.


1. Healthy Eating and Budget Eating Are Not in Conflict 🛒

This is probably the most important thing I can say upfront, so let's get it out of the way early.

The idea that eating healthily is expensive is one of the most persistent myths in nutrition — and it does real damage. It stops people from trying. It creates a sense that good health is only available to people who can afford it.

The evidence doesn't support that.

Some of the most nutritionally valuable foods available — oats, eggs, lentils, frozen vegetables, tinned fish, bananas — are also among the cheapest items in any supermarket. The cost of living crisis is real and it's genuinely hard. But the solution isn't expensive health food. It's knowing which affordable staples are actually worth your money.

That's the Dietitian's lens. And it changes how you shop.


2. Principles Over Products 🧠

A lot of nutrition content focuses on specific foods. Eat this. Avoid that. Add this superfood. Cut that ingredient.

The problem is that food lists without context aren't that useful. What matters more than any individual food is the thinking behind your choices.

Here's how I approach a shop:

  • Protein at every meal — it keeps you fuller for longer and supports muscle, recovery, and metabolism. Think eggs, fish, meat, pulses, dairy or their alternatives. NOT expensive powders or 'high protein' branded products, which rarely offer better value than the real thing.

  • Vegetables in volume — fresh where it makes sense, frozen where it doesn't. Frozen is often more nutritious than fresh because it's preserved at peak ripeness, and it's almost always cheaper.

  • Carbohydrates as fuel, not the enemy — wholegrain where possible for the fibre and slower energy release, but white versions aren't a disaster. Context always matters.

  • Fats from real food sources — nuts, seeds, oily fish, eggs. Not supplements, not overpriced oils. Food first, always.

  • Flavour without cost — spices, herbs, and a few store cupboard staples can turn the most basic ingredients into something genuinely good to eat.

None of this is complicated. But it does require knowing which foods deliver the most value — nutritionally and financially.


3. What Most People Get Wrong at the Supermarket 🚫

A few patterns I see repeatedly — both in clinical practice and in what people tell me online:

  • Paying a premium for brand names that are nutritionally identical to own-brand versions. The label costs more. The food doesn't taste better.

  • Assuming fresh is always superior to frozen or tinned. It isn't. Frozen spinach, frozen fish, tinned tomatoes, tinned sardines — all excellent, all cheaper, all underused.

  • Buying "health" products — protein bars, wellness shots, expensive supplements — instead of addressing the basics first. The basics are almost always more impactful and a fraction of the cost.

  • Shopping without a list or plan, which leads to impulse buys, food waste, and overspending on things that don't actually build meals.

  • Checking the price per pack rather than the price per unit. A larger pack that costs more upfront often works out significantly cheaper — it's usually displayed in small print on the shelf label.

These aren't character flaws. Nobody teaches this stuff. That's precisely why it's worth talking about.


4. Consistency Beats Perfection — In the Kitchen Too 🔄

My shop isn't identical every week. Some weeks I batch cook everything. Some weeks I'm relying on quick fallbacks. Weekends look different to weekdays — deliberately, because variety helps me stick to it.

The goal isn't a perfect diet. It's a reliable structure that holds up when life gets busy — which it always does.

That means having staples you trust, meals you know work, and enough flexibility that one off day doesn't derail the whole week.

It also means giving yourself permission to eat the salmon on a Friday night as a treat, drink the diet lemonade, and not pretend that health is a joyless exercise in restriction. It isn't. And anyone telling you otherwise is selling something.


5. Want to See Exactly What I Buy? 📋

Everything above is the thinking. If you want the specifics — the actual items, what they cost, how long they last, why I choose each one, a full weekday and weekend meal plan, and seven practical ways to cut your grocery bill starting today — I've put it all into a free guide.

It's called Shop Like A Dietitian.

It's my actual shop. Not a curated, aspirational version of it. The real one — from a Registered Dietitian who shops at Aldi and drinks diet lemonade and doesn't believe good health should cost a fortune.


It's free. No catch. Just the most useful thing I can give you to make your next food shop a bit smarter.

You've got this — find your Healthy.Fit.

Healthy.Fit.

Real Food. Real Budgets. Real DIetitian.
You got this - find your HEALTHY.FIT.

hello@gethealthyfitofficial.com

© 2025. All rights reserved.

Barrow In Furness, UK

Quick Links

For education only - not personal advice.