In a recent article in the Volkskrant , it became clear that the nutritional value of our crops seems to be declining. Research indicates that the rising CO₂ concentration in the air may play a role in this. But what does that mean for our diet? Are we still getting enough nutrients?
More fruit and vegetables: the solution?
At first glance, the answer seems simple: eat more fruit and vegetables. This would allow you to compensate for the decreased nutritional value. But it’s not that simple. The higher CO₂ concentrations not only cause crops to contain fewer nutrients, but can also lead to them providing more calories. And that is precisely where the problem lies. Many people already consume more calories than they need. Eating extra to compensate for a possible nutrient deficiency is therefore not necessarily the best solution.
How do you prevent deficiencies?
The basis remains of course a healthy and varied diet. In addition, dietary supplements can be a supplement. Especially now that there is increasing evidence that it is not always easy to get all the necessary vitamins and minerals exclusively from food. Food supplements are therefore not a substitute for a healthy diet, but can certainly be a valuable addition in certain situations.
References:
Ter Haar, S. F., Van Bodegom, P. M., & Scherer, L. (2025). CO2 rise directly impairs crop nutritional quality. Global Change Biology, 31(11), e70568.
