Coffee, tea, and other caffeinated drinks are diuretics, meaning that they cause you to have to urinate. Some people claim that drinking coffee makes them urinate more than the amount that they drank, a problem that can lead to dehydration if one consumes excessive amounts of coffee.
However, that doesn’t mean that you should avoid coffee and tea when you are sick (however, you should prevent artificially caffeinated drinks, like soda). Coffee-lovers and tea-drinkers can rest happily knowing that they do not have to forfeit their favorite beverage to feel better next time they get sick.
The antioxidants found in coffee and tea far outweigh the temporary side effect of having to urinate more frequently. Studies have shown that people who regularly consume coffee and tea (especially green tea) have improved cardiovascular health, lower rates of cancer, and better cognition (especially among Alzheimer’s patients) than those who do not.
Drinking coffee when you are under the weather is unlikely to make you feel better, beyond it being a comfort food that can provide an emotional boost. Furthermore, if you need extra sleep, you may want to reduce the caffeine. But ultimately, it will do more good than bad.
“9 Myths About Immune-Boosting Foods That Health Experts Want You to Stop Believing,” by Betty Gold. Real Simple. March 30, 2020.
“5 myths about boosting your immunity,” by Susie Burrell. MSN Health. May 29, 2020.
“The 5 biggest myths about immune system boosters,” by Jackie London. Weight Watchers Reimagined.