Water fasts, juice fasts, intermittent fasts, alternate-day fasts… It’s safe to say most of us have tried – or know someone who has tried – fasting.

Fasting is generally pursued for health reasons, as it has been shown to aid weight loss and even boost cognitive performance. That said, there are many other valid reasons why you might consider fasting, whether on a short- or longer-term basis.

Of course it is counterproductive to fast if doing so brings its own problems, particularly related to nutritional deficiencies, and so some smart supplementation should be considered. And not just to plug dietary gaps either, but to increase the efficacy of the fast itself.

In this article, we shall summarise some of the most common questions surrounding the topic of supplementation during fasting.