Some people who can usually use language to communicate lose a lot of their words if they get too hungry.

When you’re hungry, you don’t have as many cognitive resources available, and some of what is available gets taken up by dealing with hunger. For some people, this can mean that the resources needed for language simply aren’t there.

If you’re finding that you often can’t speak well in the middle of the day, it’s possible that you are forgetting to eat. This might be the case even if you don’t feel hungry.

If you get used to not eating properly, it can be hard to notice hunger. If you’re too hungry for too long, sometimes you get used to automatically ignoring the sensations of hunger, which can make them hard to identify.

If you’re experiencing sudden cognitive or communication impairment, and you haven’t eaten recently, it might be a side effect of hunger. Sometimes, if you get too accustomed to the sensations of hunger, you don’t notice feeling hungry until it stops you from thinking well.

If you used to be able to use language reliably but are experiencing seriously diminished ability, it might mean that you haven’t been eating properly for a long time.

Hunger isn’t the only reason some people have intermittent language problems, and it’s not the only reason people lose language skills in a longer-term way. But it’s very common for people with communication disabilities to have dramatically worse communication problems when they are chronically hungry.

If you’re having communication problems that seem to be more severe than you expect, it’s worth checking to see if you’re also having trouble eating enough. And if you are, it’s worth making fixing that a priority.