ACS Facility Services- What to eat and avoid to maintain a strong immune system in Geneseo NY, 14454

ACS Facility Services- What to eat and avoid to maintain a strong immune system in Geneseo NY, 14454

What to eat and avoid to maintain a strong immune system

The immune system helps protect the body against contractable illnesses, such as the common cold and the flu. Nutrition is an important part of ensuring that the immune system stays strong.

Regularly consuming certain unhealthy foods may prevent the immune system from functioning properly. This may reduce its ability to function at an optimal level.

Some research suggests that diets high in added sugar and excess salt are associated with an increased risk of autoimmune conditions. This means that diet plays an important role in keeping the immune system healthy.

On the other hand, eating foods that contain certain nutrients, such as vitamin C, may help boost the immune system.

This article will discuss which foods weaken the immune system and which foods may help boost it.

Which foods weaken the immune system?

 

The sections below will look at a few foods that may weaken a person’s immune system.

Processed foods

Processed foods tend to contain unhealthy fats, sugars, and additives, which can improve taste, texture, and shelf life. These may weaken the immune system.

Some processed foods include:

  • microwave meals

  • breakfast cereals

  • chips

  • cakes and cookies

One 2017 study found that eating foods containing additives may lead to an increase in the risk of several immune conditions. The study looked at additives such as sucralose, aspartame, carboxymethylcellulose, polysorbate-80, sodium, and carrageenan.

The researchers point out that people who eat a diet that contains foods with additives are more likely to have obesity, immune inflammation, and insulin resistance.

Eating sugars and fats in processed foods can also lead to consuming too many calories, which can increase a person’s risk of obesity.

When a person has obesity, this leads to inflammation. This inflammation can lead to insulin resistance, cirrhosis, and liver failure, as well as immune system dysregulation.

Foods high in sugar

Consuming foods that are high in sugar may weaken the immune system.

Some foods that may be high in sugar include:

  • preserves, marmalades, and confectionary

  • cookies and cakes

  • flavored milk and sweetened dairy products

  • sugary breakfast cereals

  • sugary drinks, such as soda

People with high sugar diets have a higher risk of several chronic conditions, including coronary heart disease and diabetes.

Also, eating a diet high in sugar may limit the immune system’s effectiveness in combating disease. It may do this by reducing the effectiveness of white blood cells and potentially by increasing inflammatory markers in the blood.

Refined carbohydrates

Processed foods and refined carbohydrates, such as white flour and refined sugar, are associated with increases in inflammation and oxidative stress, which can impact the immune system.

Some foods that contain refined carbohydrates include:

  • white rice

  • white bread

  • refined sugar

Foods for a healthy immune system

Consuming a well-rounded, nutrient dense diet can help promote a moderate body weight, which is important for immune system function.

Foods such as fruits and vegetables contain the nutrients the body needs to function optimally, such as vitamins, minerals, and protective plant compounds that help protect against cellular damage.

The following foods may provide immune-boosting benefits.

Citrus fruits

Citrus fruits are good sources of vitamin C.

One 2017 study found that vitamin C has several properties that can help contribute to healthy immune function.

Vitamin C is a powerful antioxidant. Antioxidants protect important molecules in the body, such as proteins and carbohydrates, from environmental and biological damage.

Vitamin C also helps promote metabolic energy and hormonal regulation. It is also necessary for collagen production.

According to the same 2017 study, most people should aim to consume 100–200 milligrams (mg) of vitamin C per day.

Foods that contain zinc

Zinc is an essential mineral that is important for maintaining a healthy immune system.

The recommended daily intake of zinc ranges from 2 mg to 11 mg, depending on a person’s age and sex. When a person is pregnant, they need 11–13 mg.

Some dietary sources of zinc include:

  • oysters

  • beef

  • baked beans

  • fortified cereals

  • chicken breast

  • cheese

  • peas

Cruciferous vegetables

Cruciferous vegetables, especially broccoli and broccoli sprouts, are good sources of the compound sulforaphane, which may help boost the immune system.

One 2016 study notes that sulforaphane has antioxidant, anti-inflammatory, and anticancer properties.

Sulforaphane helps prevent the activation of natural inflammatory processes in the body that can lead to inflammation.

One 2018 study investigated the effect of sulforaphane on colon cancer cells. It found that sulforaphane prevented inflammation of the immune cells, which the researchers suggested may help prevent the development of cancer.

Garlic

There is evidence to suggest that consuming garlic may be beneficial to the immune system.

One 2015 article suggests that garlic may help prevent cardiovascular diseases by reducing inflammation of the blood vessels.

Additionally, garlic may reduce inflammation in people with obesity, who often have low-grade chronic inflammation that can lead to other health conditions.

The anti-inflammatory effect of garlic may also help ease the symptoms of irritable bowel syndrome.

Ginger

People have been using ginger to enhance the flavor of food for centuries. More recently, researchers have been investigating the effects of ginger on the immune system.

A 2020 analysis of high quality studies found that consuming ginger supplements, such as ginger powder, has an anti-inflammatory effect on arthritis. Consuming ginger reduced inflammation in those with osteoarthritis and rheumatoid arthritis.

The analysis also found that consuming ginger supplements helped reduce body weight in people with obesity.

This may mean that ginger also improves the health of the immune system indirectly, as obesity is linked with chronic inflammation.

Summary

Eating certain foods may weaken or help boost the immune system.

In general, try to avoid diets that are low in fiber and high in refined carbohydrates, sugar, and processed foods. These foods may suppress immune function.

On the other hand, eating foods that contain zinc, citrus fruits, garlic, ginger, and cruciferous vegetables may contribute to healthy immune function.

These foods have antioxidant and anti-inflammatory properties, which may help keep a person healthy and reduce disease risk.

Eating a healthy, balanced diet can help maintain a person’s immune system so that it can fight disease while reducing chronic inflammation.

Medically reviewed by Jillian Kubala, MS, RD — Written by Veronica Zambon on March 16, 2021

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