Can you lose weight with protein shakes? Short answer: a protein shake won’t make you lose weight on its own. Weight loss happens through an energy deficit: in other words, consuming fewer calories than you burn. A protein shake can be a practical aid in this process to ensure you get enough protein. In this article, we’ll explain in detail what protein does and doesn’t do when you’re trying to lose weight, so that you can make an informed choice for yourself.
Do protein shakes help you lose weight?
You’ll lose weight if, over a longer period, you consume fewer calories than you burn. A protein shake has no magical effect and does not burn fat on its own. What a shake does, however, is provide you with protein in a quick and measurable way, making it easier to reach your daily protein target without consuming many extra calories.
The term ‘losing weight with protein shakes’, which you often come across online, actually refers to something else: a high-protein approach within a calorie deficit. The shake is the tool; the calorie deficit is the driving force. Want to understand how your body manages energy? Then read about how fat burning works and how counting macros helps you keep track of your calorie intake.
Why is getting enough protein important when you’re losing weight?
If you eat less than you burn, your body draws on its reserves. As well as fat tissue, it may also break down muscle tissue. This is precisely when sufficient protein is important: protein contributes to the maintenance of muscle mass. This is one of the effects officially substantiated in the European Register of Nutrition and Health Claims.
That is why a high-protein approach is often recommended when losing weight. Not because protein burns fat, but because protein contributes to the maintenance of muscle mass whilst you lose weight. If you combine this with strength training, protein contributes to a growth in muscle mass.
Is whey protein or vegan protein powder more effective for weight loss?
No single protein source burns fat or helps you lose weight any faster than another. Whey, casein and vegan protein powder are all simply sources of protein. The main differences lie in the rate of digestion, the flavour and whether you prefer an animal-based or vegan source.
| Protein type | Source | Characteristics |
|---|---|---|
| Whey protein | Milk | Mild in flavour, mixes easily |
| Casein | Milk | Thicker, creamier texture |
| Vegan (pea, fava, rice) | Plants | Vegan and lactose-free |
When it comes to weight loss, the choice between these sources makes little difference. Search for ‘whey protein for weight loss’ or ‘protein powder for weight loss’ and you’ll mainly find marketing hype; simply choose what suits you and what you can easily stick to. You can read more about the role of protein powder in your diet in our article on the benefits of protein powder.
How much protein do you need each day to lose weight?
How much protein you need depends on your weight, your activity level and your goal. As a guideline, active people or those in a calorie deficit are often advised to consume 1.2 to 2.0 grams of protein per kilogram of body weight per day. If you can’t get that from your regular diet, a shake can help to top it up.
The starting point should always be real food: eggs, dairy, pulses, fish and meat. A shake is a supplement, not a replacement for a varied diet. We’ll work out exactly how much protein you need each day.
What should you look out for when choosing a protein shake?
There’s no single ‘best’ protein shake for weight loss, but there is a profile to look for: a clean shake that fits your protein goal and that you find tasty enough to stick with. Pay particular attention to the ingredients list.
- A high protein content per serving
- As few unnecessary additives as possible, such as artificial flavourings, colourings and refined sugars
- A short, easy-to-read list of ingredients
- A type that suits you: whey, casein or vegan
Many protein powders on the market contain more additives than necessary. So turn the packet over and read the label before you choose.
Frequently asked questions
Are protein shakes healthy?
A protein shake is essentially just a source of protein in powder form, similar to the protein found in dairy or pulses. Whether it’s ‘healthy’ depends mainly on what’s in it. A shake with a short, clean list of ingredients fits perfectly into a varied diet; one packed with additives, less so.
Does losing weight with protein shakes work differently for women?
The principles are the same for everyone: weight loss is all about creating an energy deficit, and your protein requirement scales with your body weight and activity level. A separate ‘women’s shake’ isn’t necessary. On average, women have a lower body weight and therefore often a slightly lower protein requirement in grams, but the approach remains the same.
Can you replace a meal with a protein shake?
It can be handy from time to time, for example when you’re on the go. However, a shake mainly provides protein and lacks the fibre, vitamins and minerals found in a full meal. You should therefore use a shake as a supplement, not as a regular meal replacement.
What’s the best protein shake for weight loss?
The best shake is one that suits your protein goal and has a clean, short list of ingredients. No single brand or flavour works for everyone; look at the ingredients rather than the claims on the front of the packet.
Ekopura protein shakes
Ekopura’s protein powders are made with a short, transparent list of ingredients, free from artificial and unnecessary additives. Whether you choose whey or a vegan option, you know exactly what you’re consuming. Our vegan pure fava is also certified organic. View the full range in our protein collection.
