Are Olives Good for Weight Loss?
Olives can absolutely have a place in a weight-loss diet, but they are not a magic fat-burner. They are calorie-dense for their size thanks to their healthy fats, yet those same fats, along with their fibre and satisfying, salty savour, make them genuinely filling. The honest answer is this: eaten in sensible portions, olives can help you feel satisfied on fewer calories and steer you away from less wholesome snacks. Eaten by the handful straight from a big jar, they add up faster than most people realise. As with most things at the Mediterranean table, the trick is portion, not prohibition.
The calorie truth: dense but small
Here is where honesty matters. Olives are roughly 75–80% water, but the rest is mostly fat, so gram-for-gram they carry more calories than, say, a crunchy vegetable. The saving grace is that a single olive is tiny and low in calories on its own, so a genuinely modest portion barely dents your daily total while still delivering flavour and a feeling of having eaten something.
The fat in olives is predominantly monounsaturated fat, chiefly oleic acid, the same heart-friendly fat that makes olive oil a cornerstone of the Mediterranean way of eating. Monounsaturated fats are not the enemy of a waistline; the research broadly links the Mediterranean pattern with better long-term weight management and metabolic health, not weight gain. What matters is that fat is calorie-dense across the board, so the portion still counts.
| Snack (typical serving) | Approx. calories | Why it matters for weight loss |
|---|---|---|
| 10 olives (roughly 40 g) | around 45–60 kcal | Savoury and satisfying for very few calories, plus a little fibre |
| A small handful of crisps (25 g) | around 130 kcal | More calories, refined starch, less staying power |
| A handful of salted peanuts (30 g) | around 170 kcal | Nutritious but very calorie-dense; easy to overeat |
| A whole 200 g jar of olives | around 230–280 kcal | Fine as an antipasto to share, a lot for one absent-minded sitting |
The figures above are widely-accepted rough ranges; exact numbers vary by variety, size and whether an olive is stuffed or oil-cured. Oil-cured (dry, wrinkly) olives tend to be a touch more concentrated and calorific than brine-cured ones, simply because they hold less water.
Why olives can actually help you eat less
A good weight-loss food is one that helps you stop eating sooner and stay content longer. Olives quietly tick several of those boxes:
- Fat and fibre slow things down. The combination of monounsaturated fat and a small amount of fibre helps a snack feel more substantial than its calorie count suggests, which can blunt the urge to reach for something bigger.
- Big flavour, small portion. Olives are intensely savoury, that moreish quality often called umami. A few can satisfy a craving for something salty far more efficiently than a bag of crisps.
- They make vegetables more tempting. A handful chopped through a salad, a grain bowl, or roasted vegetables makes genuinely healthy, lower-calorie meals taste like a treat, which is half the battle when you are trying to eat lighter.
- Slow eating. Unpitted olives make you slow down and work around the stone, and slower eating is quietly one of the more reliable habits for eating a little less overall.
None of this makes olives a weight-loss cure. They work because they help you build meals you actually enjoy while keeping the calorie maths in your favour, which is exactly how sustainable weight loss tends to happen in the real world.
The salt caveat
The one thing to keep an eye on is sodium, not calories. Olives are cured in brine, so they are naturally salty. That is no barrier to weight loss in itself, but high salt intake can cause a little water retention and matters for anyone watching their blood pressure. If you eat olives often, you can rinse them briefly, choose reduced-salt options, or simply keep the portion modest. If you are curious about how that saltiness gets there in the first place, our guide to how olives are cured explains the brining process.
People also ask: common questions
How many olives can I eat a day if I’m trying to lose weight?
There is no fixed rule, but a portion of roughly 8–12 olives, around a small handful, is a sensible everyday amount. It keeps calories low, gives you the healthy fats and flavour, and keeps the salt in check. The problem is rarely the olive itself; it is the mindless top-up from an open jar.
Are green or black olives better for weight loss?
There is very little to choose between them for weight loss. Green olives are picked unripe and black ones fully ripe, but their calorie content is broadly similar. Colour is not a country of origin or a health grade; it mostly reflects ripeness and curing. Pick whichever you enjoy, since the one you like is the one you will eat in a sensible amount.
Do olives in olive oil count as more fattening?
Only if you eat the oil too. Olives stored in oil do not soak up dramatically more calories, but any oil you spoon out and eat adds up quickly, because a tablespoon of olive oil is around 120 kcal. Drain them well and you keep the olives without the extra. Brine-packed olives sidestep the question entirely.
Can olives help me feel full between meals?
For many people, yes. Their fat, fibre and strong savoury flavour make a small portion feel satisfying, which can take the edge off hunger and help you get to the next meal without a larger, less wholesome snack. Pair a few with some vegetable sticks or a little cheese for an even more filling bite.
This article is general food information, not medical or dietary advice. If you have specific health goals or conditions, it is worth speaking to a doctor or registered dietitian who knows your circumstances.