Low Sodium Positively Impacts Immunity

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Did you know that salt intake has a direct effect on your immune status? Learn how you can boost your immunity by controlling your sodium intake.

For a very long time, the ills of too much sodium have been limited to hypertension. Should immunity come up in the conversation, it usually has to do with the proposed immune-boosting effects of sodium. Don’t we all use salt water to clean open wounds? The premise of this practice is based on the perceived antibacterial properties of salt. Is this theory valid? Do higher sodium levels really boost one’s immunity?

Study shows that too much sodium will weaken your immunity

A new study has revealed that salt weakens immunity when too much of it is consumed. Researchers from Bonn University Hospital carried out a study to investigate the relationship between sodium intake and immunity. In this study, mice that received a high-salt diet developed severe bacterial infections while the control group did not. Human volunteers who received higher sodium (six grams of salt per day) also showed signs of suppressed immunity. 

Note that six grams of sodium is equivalent to two fast-food meals (an example of two burgers and French fries). The researchers concluded that consuming higher amounts of sodium can compromise one’s immunity. The results of this study were published in the journal Science Translational Medicine.

What this study means for your diet

Eating a high-sodium diet on the regular is likely to increase your susceptibility to a myriad of opportunistic infections. That extra burger or pack of French fries could be the reason for your failing health.

The WHO’s recommended daily sodium intake for adults is 5g per day. This translates to a level teaspoon of salt each day. Most adults consume 7 to 9 grams of sodium per day, which means a majority of adults in the U.S. have an increased risk of developing hypertension and as well as immune-related conditions.

Was this finding unexpected? The researchers admitted that it was since a number of studies have indicated the contrary. Lab studies have shown that a high-sodium diet helps to treat certain skin parasites, leading researchers to conclude that salt has an immune-enhancing effect.

The link between sodium and the immune system

The research by Bonn University shows that the generalization that salt is good for your immune system is inaccurate. The lead researcher, Katarzyna Jobin, observed that higher sodium concentrations are stored in the skin while the concentration in the blood and cells is maintained at a constant level. Biological processes would otherwise be impaired if sodium levels keep fluctuating after every meal.

The excess sodium consumed is usually filtered out of the body through the kidneys. A sodium chloride sensor is triggered during this process and causes the accumulation of glucocorticoids in the body. It is this accumulation of glucocorticoids that inhibits the action of important immune cells known as granulocytes. Cortisone is a type of glucocorticoid that is often used to treat autoimmune diseases because of its immune-suppressing properties.

High salt intake causes obesity and insulin resistance

High sodium intake is not only bad for your immune system but also a risk factor for obesity and insulin resistance. A 2018 study published in Nature’s Reviews Nephrology showed that higher sodium intake activates pathways that lead to leptin resistance. While salt does not have any calories of its own, it increases appetite and makes you consume more food.

The researchers also analyzed data from a cohort of 13,000 healthy Japanese people. They found a correlation between higher baseline salt intake and the development of metabolic syndrome and diabetes, even after they adjusted for caloric intake. The researchers observed that salt restrictions should not only be prioritized for the management of hypertension but a variety of other conditions as well.

7 tips to reduce your sodium intake

Lowering your sodium intake will help keep several diseases at bay and improve your overall health. Here are some of the best ways to get started on this journey.

  1. Avoid eating processed foods: Processed foods are likely to have higher amounts of sodium because salt is usually used to preserve foods. The CDC recently reported that most of the sodium consumed by Americans comes from processed and packaged foods and rarely from salt that has been added directly to food.
  1. Enrich your diet with fresh fruits and vegetables: Fresh fruits and veggies typically have lower levels of sodium. Other low-sodium foods include unsalted nuts, skinless chicken or turkey breast, lean cuts of beef or pork, and dried beans and lentils.
  1. Go for fresh frozen: When you have to buy frozen foods or vegetables, opt for ones that are fresh frozen as they are likely to have less sodium.
  1. Stick to your sodium limit: When purchasing foods, ensure that you scrutinize the food label for the sodium content. Ensure that each serving does not exceed your limit for each meal. Stick with foods that have less salt but great taste
  1. Sodium meal plan: Come up with a low-sodium meal plan to guide your meal choice. This includes finding foods and recipes that will keep you within your sodium limit. Balance your sodium intake between meals so you do not find yourself having all your sodium in one meal and lacking options for other meals.
  1. Retrain your taste buds: Higher salt is an acquired taste, so train your taste buds to adjust to less salt.
  1. Try MicroSalt®: Did you know that you can have your cake and eat it, too? You can have the best of both worlds in every literal sense of the phrase. It is possible to please your taste buds while keeping your sodium intake at a minimum thanks to a new revolutionary technology by MicroSalt®.

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