Did you know that from January 2026, a 30g portion of plain nuts will be a Slimming World Healthy Extra fat choice? That's right – they'll be absolutely free within your daily allowance! This is brilliant news for nut lovers, recognising their fantastic satiety and healthy fats, which used to mean hefty syns. Let's dive in!
Before this exciting update, nuts were quite high in syns due to their calorie density. But the 2026 Healthy Extra fats update brilliantly recognises that the unsaturated fats in nuts work differently for our bodies than saturated fats, and that a measured 30g portion helps you feel full for ages without breaking the calorie bank. It’s a proper win! So, in this guide, we’re going to look at the calories and syn values for all your favourite nuts, explain the new 2026 HE fats rules, and show you which ones pack the most protein and keep you feeling satisfied for longer.
So, how many calories are we actually talking about when it comes to nuts? Generally, most nuts sit between 560–720 kcal per 100g. The difference isn't massive, really – cashews are usually on the lighter side at 557 kcal per 100g, while the lovely macadamia nuts are at the higher end at 718 kcal per 100g. If you grab a standard 30g handful, you're looking at roughly 167–215 kcal, depending on which nut you've picked up.
| Nut type | Per 30g | Calories | Protein | SW (2026) |
|---|---|---|---|---|
| Almonds | 30g (~23 nuts) | 184 kcal | 6.3g | Free (HE fats) |
| Cashews | 30g (~18 nuts) | 167 kcal | 5.2g | Free (HE fats) |
| Walnuts | 30g (~14 halves) | 196 kcal | 4.6g | Free (HE fats) |
| Pistachios (shelled) | 30g (~49 nuts) | 171 kcal | 6.2g | Free (HE fats) |
| Brazil nuts | 30g (~6 nuts) | 204 kcal | 4.4g | Free (HE fats) |
| Peanuts (plain, unsalted) | 30g | 176 kcal | 7.6g | Free (HE fats) |
| Hazelnuts | 30g (~20 nuts) | 191 kcal | 4.5g | Free (HE fats) |
| Macadamia nuts | 30g (~11 nuts) | 215 kcal | 2.3g | Free (HE fats) |
| Mixed nuts (unsalted) | 30g | 183 kcal | 5.5g | Free (HE fats) |
| Peanut butter (smooth, 2 tbsp) | 32g | 191 kcal | 8g | Free (HE fats) |
Just a friendly heads-up: that amazing HE fats portion for nuts on Slimming World is around 30g per day. If you go a bit over that (and honestly, it's easily done!), any extra will start counting as syns – we’re talking roughly 6 syns for every additional 30g. So, my top tip? Get those kitchen scales out and weigh your nuts rather than just guessing a handful. Trust me, what one person calls a 'handful' can be totally different for someone else, and it’s easy to accidentally grab 50–60g instead of the planned 30g!
Right, let's get into the nitty-gritty of the 2026 Slimming World changes! Yes, from January 2026, a lovely 30g portion of plain nuts will absolutely count as a Healthy Extra fats choice. That means they're totally free within your daily HE allowance. This is a massive shift, as before 2026, that same 30g of almonds would have set you back about 9–10 syns! Honestly, it’s a brilliant change for anyone who, like me, loves to snack on nuts or use them in cooking.
So, which nuts are we talking about? All your plain, unsalted favourites should qualify – things like almonds, cashews, walnuts, pistachios, peanuts, Brazil nuts, hazelnuts, and good old mixed nuts. If you fancy salted, roasted, or flavoured nuts, just double-check the ingredients list to make sure no extra oil has been added during the roasting process. But do remember, yummy as they are, honey-roasted, chocolate-coated, or yoghurt-covered nuts unfortunately won't qualify as HE fats. Stick to the wholesome stuff for your free allowance!
Ever wondered which nut is the 'lightest' in terms of calories? Well, cashews take the crown among mainstream nuts, coming in at 557 kcal per 100g – that's about 167 kcal for a 30g portion. Pistachios are a close second at 562 kcal per 100g. While these are on the lower end, the difference between the lowest and highest (that's our macadamia friends again at 718 kcal per 100g) is actually around 30% per 100g. Honestly surprised me when I looked that up!
But here's the real talk for weight loss: the small calorie difference between nut types is far less important than good old portion control. A 30g serving of cashews (167 kcal) versus 30g of almonds (184 kcal) is only a 17 kcal difference – pretty negligible in the grand scheme of things. What truly matters is whether you actually stop at that 30g! All nuts are super calorie-dense, so even 60g (which, let's be honest, can look like a perfectly moderate amount) packs a punch of 335–430 kcal. So, measuring really is key here.
Now, this is an interesting one! Despite being calorie-dense, regularly munching on nuts is actually linked to lower body weight in long-term diet studies. Take the PREDIMED study, for example – they followed 7,447 people for 5 years, and found that those who followed a Mediterranean diet *plus* nuts had much better weight outcomes and even saw greater reductions in their waistlines compared to a low-fat control group. How brilliant is that?
The secret sauce here is satiety – that wonderful feeling of being full! The brilliant mix of protein, fibre, and healthy fats in nuts really helps to curb your appetite for hours after you've eaten them. Imagine having a 30g portion of almonds (that's 184 kcal) around 11 am; it often means you'll eat *less* at lunchtime, creating a net calorie deficit. I've found that myself – adding a daily 30g nut portion as a Healthy Extra can seriously cut down those afternoon urges to reach for higher-syn treats. It's a proper smart swap!
If you're looking for a protein punch, then peanuts are your go-to! They pack the highest protein per 30g portion, delivering a cracking 7.6g – more than any other mainstream nut. Almonds and pistachios aren't far behind either, with 6.3g and 6.2g respectively. Our macadamia friends, bless them, are at the lower end for protein with just 2.3g per 30g.
And here's another great reason to love peanuts: they're usually the most budget-friendly nut in UK supermarkets! You can often pick up a 200g bag of plain, unsalted peanuts for under a quid. So, if you're thinking about getting the most protein for your money, peanuts are definitely the winner. Plus, let's not forget peanut butter – a two-tablespoon serving (32g) will also qualify as a Healthy Extra fat from 2026, giving you a brilliant 8g of protein for zero syns within your daily allowance. I always keep a jar of the good stuff in my cupboard!
Okay, let's tackle the creamy goodness that is nut butter! From 2026, a 32g serving (that's usually two tablespoons) of plain peanut butter will qualify as a Healthy Extra fats choice – making it absolutely free within your daily HE allowance. Can you believe it? Before this change, the same portion would have been around 9 syns. And it's not just peanut butter; almond butter and cashew butter, in the same portion size, will also qualify under these fantastic new rules. This is the one I grab when I'm being good!
However, a little word of caution: not all nut butters are created equal, so some won't qualify. Steer clear of any with added palm oil, sugar, or chocolate – so that means popular choices like Nutella, those yummy chocolate peanut butter spreads, and honey-sweetened nut butters are out for your HE allowance. The ones that *do* qualify are those where the only ingredients are simply nuts, and perhaps a pinch of salt. Brands like Meridian and Whole Earth plain varieties, plus most supermarket own-brand '100% nut' butters, should be fine. Always, always check that ingredients list – it should just say 'nuts and salt'!
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