Spinach is rich in nutrients, especially folate, which stimulates the body to create new cells and repair DNA. It also contains fiber and antioxidants like vitamin C, which reduce oxidative stress and strengthen the immune system.

Low-fat yogurt contains probiotics, which help alleviate symptoms such as nasal congestion, sore throat, and cough, while stabilizing the digestive system. Yogurt also provides vitamin D, supporting the prevention of common colds, flu, and pharyngitis.

Oysters are rich in zinc, a crucial mineral for the immune system. Zinc is involved in creating and activating white blood cells, helping the body fight viruses, promoting wound healing, and preventing flu and common colds.

Sweet potatoes are rich in beta-carotene. In the body, beta-carotene converts into vitamin A, which helps eliminate harmful free radicals, strengthening the immune system and resistance. Individuals with a sore throat can consume mashed or boiled sweet potatoes, as they are soft and easy to digest.

Mushrooms are rich in the mineral selenium and B vitamins, such as vitamin B2 and vitamin B3, offering numerous health benefits. A selenium deficiency increases the risk of severe flu, causing pharyngitis to progress more rapidly. Both of these vitamins help maintain a healthy immune system and support disease prevention.

Watermelon is not only refreshing but also contains the antioxidant glutathione. This compound helps boost the immune system to fight infections. Individuals with a sore throat can eat watermelon daily to hydrate the body without irritating the throat. To absorb the most glutathione from watermelon, consume the soft red flesh near the rind.