Since our bodies are around 60-70% water by weight, and every single bodily function requires water, drinking adequate amounts of H20 is a good place to start to keep your immune system functioning. When your body is dehydrated, it can promote the growth of bacteria and viruses. That's why it's so important to make sure you drink the optimal amount of water for your body's needs every single day.
A good rule of thumb for how much water is to drink half of your body weight in fluid ounces. If you weigh 150 pounds, your goal would be 75 ounces of water a day.
Some of the ways that water helps support the immune system is by aiding the absorption of nutrients and maintaining the mucous membranes in your nose, mouth, and throat that are often the first line of defense against a pathogen and a natural barrier to infections. Water is also an essential component of lymphatic fluid, which delivers white blood cells that help fight infections.
A study published in the journal Medical Hypotheses reported that individuals who were noted as being dehydrated prior to contracting COVID 19 were at increased risk of dying from COVID-19. The authors recommend that there should be public health recommendations to drink more water to help prevent and have better outcomes in fighting COVID-19.