Are smoothies healthy?

Especially now, in the summer heat, you might not feel much like eating or you might simply not feel hungry at all. That’s why it’s so tempting to just grab a quick smoothie from the supermarket or make one yourself at home. It’s really easy, quick and, after all, healthy! Or is that perhaps not true at all?

In this article, we’ll take a closer look at smoothies, their health effects and which alternatives are actually worthwhile.

What exactly is a smoothie?

There is no single, standard definition of what a smoothie is. Generally speaking, however, smoothies are drinks with a high fruit or vegetable content. They usually have a very creamy consistency and, depending on the type, are made with water, juice or dairy products. As a rule, they should not contain any added sugar or flavourings, as they are made naturally. This applies to both homemade and shop-bought products. The main difference compared to fruit juice is that they are not made by pressing the fruit, but from the entire fruit instead. The composition can vary greatly depending on personal preference, ranging from a high fruit content to a high vegetable content [1].

The benefits of smoothies

Compared to juice, smoothies have a clear advantage. This is because they contain not only the liquid, the substances dissolved in it and the fruit’s natural sugars, but also all the edible parts of the ingredients. This gives them their creamy consistency and ensures that significantly more of the whole fruit’s nutrients are retained. The fibre content also clearly exceeds that of juice. As it is possible to vary the main ingredients constantly, the levels of the various vitamins and minerals also vary [2][3].

They also offer an advantage over whole fruit and vegetables. Whilst these have a very large volume and are highly filling due to their sometimes very high fibre content, the satiating effect of smoothies is significantly reduced. Although this is not an advantage for everyone, it can certainly be an option for people who find it very difficult to meet their fruit and vegetable requirements. They also offer a way to make use of small quantities of leftover fruit and vegetables at home in a slightly more varied way, thereby creating a fresh and simple snack [2].

In summary, it can be said that smoothies can be a useful source of vitamins and minerals thanks to their versatility. If you find them too filling, smoothies are certainly a viable option from time to time as a complement to whole fruit and vegetables.

Any downsides?

The downsides of smoothies begin with their very definition. As there are no standard guidelines for smoothies, the ingredients – and consequently the nutrient content – can vary greatly. Fruit smoothies, in particular, carry the risk of having a very high sugar content. This can sometimes cause blood sugar levels to rise very quickly and without the drinker realising it. At the same time, the calorie content can also be very high, particularly if fruit juice rather than water is used as the liquid and the smoothies contain a high proportion of fruit [3]. Furthermore, blending means that the volume of a smoothie is significantly smaller than that of whole fruit or vegetables. As a result, the dietary fibre is mechanically broken down to a great extent, and you feel full for a shorter time than you would with whole fruit and vegetables. If all these factors coincide with an increased intake of sugar (after all, blending allows you to consume more fruit and fruit juice in one go), this can be a very unfavourable combination [2-4]. With shop-bought smoothies, it is also very difficult to tell how much of the contents actually comes from fruit or vegetable purée and how much from juices. This is mainly because only the main ingredients need to be listed. The exact composition does not have to be stated on the packaging [2].

Let us conclude. Are smoothies healthy?

There is a good reason why smoothies are so popular. You can make them at home at your leisure or buy them quickly and easily at the supermarket. They’re fresh, offer variety and, especially when you’re not feeling very peckish, they give you the chance to still consume some of the recommended amount of fruit and vegetables. As an occasional snack between meals or, on rare occasions, as a meal replacement when you’re in a hurry and have no time for anything else, they are therefore a perfectly viable alternative.

However, you should opt for smoothies with a high vegetable content and a low fruit and fruit juice content. These contain significantly less sugar whilst still being rich in vitamins and minerals. It’s also best to make smoothies yourself rather than buying them. This allows you to clearly control which ingredients you use and how large the portion size is. Unfortunately, when buying ready-made smoothies, it’s usually not clear what the actual ratio of ingredients is. However, the best approach is still to eat fruit and vegetables in their natural form. This preserves the natural nutrients, and the fibre ensures you feel fuller for longer. It also allows you to control your sugar intake much more effectively, meaning you consume less. Water or unsweetened teas are a much better alternative as drinks.

If you do, however, fancy a smoothie every now and then, you’ll also find simple and balanced recipes here in the future that you can try out for yourself.

References:

[1]	Dr. Alexander Vögtli, Smoothies, PharmaWiki, Medikamente und Gesundheit, 14.4.2026, Website: https://www.pharmawiki.ch/wiki/index.php?wiki=Smoothies
[2]	H.Loidl, Saft, Frucht oder Smoothie: In welcher Form ist Obst am Gesündesten, Apotheken Umschau, 22.07.2026, online: https://www.apotheken-umschau.de/gesund-bleiben/ernaehrung/obst-frucht-saft-smoothie-welche-form-ist-am-gesuendesten-1557503.html
[3]	Deutsche Gesellschaft für Ernährung (DGE), Obst und Gemüse – viel und bunt, Die DGE-Empfehlungen, 31.01.2026, online: https://www.dge.de/gesunde-ernaehrung/gut-essen-und-trinken/obst-und-gemuese/
[4]	AOK, Grüne Smoothies – so gesund sind sie wirklich, AOK Gesundheitsmagazin, 05.02.2024, online: https://www.aok.de/pk/magazin/e rnaehrung/obstgemuese/gruene-smoothies-wie-gesund-sind-sie-wirklich/