Health.com suggests eating oily fish, like salmon and tuna, when you have a cold, to take advantage of their omega-3 fatty acids. These compounds help reduce inflammation in the body, which can prevent your immune system from working properly.
https://www.rd.com/health/conditions/what-to-eat-when-you-have-a-cold/
Mood Food. A lack of sunlight, common in cold weather and cold climates, can cause “winter depression” in many individuals. This is also known as S.A.D., or seasonal affective disorder. Cravings for carbohydrate-rich foods are common when affected by winter depression. Some individuals report feeling better during and after carbohydrate consumption.
http://healthyeating.sfgate.com/foods-eat-cold-temperatures-2240.html
Carrots and Other Vitamin A-Rich Foods. All vitamins are essential to a healthy body, but Harvard Medical School says vitamin A is a key player in maintaining a strong immune system. When you have a cold, try eating sweet potatoes, carrots, squash, spinach, or collard greens.
https://www.rd.com/health/conditions/what-to-eat-when-you-have-a-cold/
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https://www.rd.com/health/conditions/what-to-eat-when-you-have-a-cold/
What to Eat When You Have a Cold: 8 Healing Foods. Each year, there are one billion cases of the common cold in the U.S. alone. Here's what to eat when you have a cold to beat the sniffles. Chicken Noodle Soup. Eating a bowl of steaming chicken noodle soup provides more than just comfort when you have a terrible cold.
https://www.rd.com/health/conditions/what-to-eat-when-you-have-a-cold/
What to Eat When You Have a Cold: 8 Healing Foods Each year, there are one billion cases of the common cold in the U.S. alone. Here's what to eat when you have a cold to beat the sniffles. Each year, there are one billion cases of the common cold in the U.S. alone. 
https://www.rd.com/health/conditions/what-to-eat-when-you-have-a-cold/
Hot Food. When the weather is cold, eating or drinking something hot increases the sensation of being warm. Baked noodle casseroles, potpies, freshly baked breads, hearty stews, soups and roasts tend to be particularly satisfying.
http://healthyeating.sfgate.com/foods-eat-cold-temperatures-2240.html
Garlic has been found to help prevent colds when consumed regularly, owing to its immune-boosting compound allicin, says Donna Cardillo, RN. Eat more garlic when you have a cold, or try it raw with an orange-juice chaser.
https://www.rd.com/health/conditions/what-to-eat-when-you-have-a-cold/
After a long day in the cold, few things are as comforting as devouring a steaming bowl of chicken noodle soup or a plate of warm pasta. During the winter or in cold climates, eating more not only ...
http://healthyeating.sfgate.com/foods-eat-cold-temperatures-2240.html
21 Twitchy, Itchy Explanations for Why Your Scalp Itches. 1  A little itch here and there is nothing to be concerned about, but when you wish you could take a rake to your head, here’s what may be going on. 2  Skipping sleep can take a toll on your memory and may be associated with an increased risk of Alzheimer’s disease.
https://www.rd.com/health/conditions/what-to-eat-when-you-have-a-cold/
which food should be eaten cold
When you have a cold, try eating sweet potatoes, carrots, squash, spinach, or collard greens.