10 risk factors for rheumatoid arthritis

Several issues can increase the chances of developing rheumatoid arthritis (RA). Some are unavoidable, but a person can take action to prevent others.

Having a healthful diet, avoiding smoking, looking after the teeth and gums, and taking probiotics may reduce the risk of developing RA.

In this article, learn more about the factors that can increase RA risk, and which lifestyle changes may help.

1. Genetic factors

If a close family member has RA, a person may have a higher risk of developing it themselves.

Genetic factors alone may not predict the disease.

However, they can make a person more likely to develop RA if other triggers, such as smoking or obesity, are present.

2. Hormones

According to the Centers for Disease Control and Prevention (CDC), women are two or three times more likely to develop RA than men. Hormones may play a role, and research into this is ongoing.

Estrogen

High levels of estrogen, a female sex hormone also present in males, may contribute to the development of the disease.

Research in animals and humans suggests that receiving estrogen replacement therapy after menopause may increase the risk of developing RA.

Also, the CDC note that women who have never given birth may have a higher chance of developing the disease.

Testosterone

Some research points to a link between low testosterone levels and RA.

In 2018, researchers published results of a case study involving 59 people with RA and 61 people, matched for sex and age, without the condition. Those with RA were more likely to have abnormal testosterone levels.

Some participants with RA then received serum testosterone therapy, and the activity of RA reduced. The authors believe that hormone replacement may help treat symptoms of RA.

Menopause

During and after menopause, females with RA often find it harder to function physically. Physical ability also seems to decline more quickly after menopause than before in females with the disease, according to results of a 2018 study.

These findings also suggest that hormones play a role in the progression of RA.

Regular smokers have a significantly higher risk of developing RA than nonsmokers, and the outlook is worse for those who continue to smoke.

Results of studies indicate that smoking may change the body’s immune response, especially in people genetically predisposed to develop RA.

Smoking can cause oxidative stress and increase the frequency of the body’s inflammatory response. It can also make some prescription RA medications less effective.

According to the authors of one study, “Smoking has been implicated as one of the most important extrinsic risk factors” for the development and severity of RA.

5. Stress

RA is an immunological disease, but some researchers suggest that it may also involve factors unrelated to the immune system. For example, the way the body reacts to stress may worsen symptoms.

People with rheumatic conditions often report that traumatic or stressful experiences occurred shortly before symptoms first appeared. Many people find that stress causes RA symptoms to flare up.

6. Obesity

The CDC report a link between obesity and the risk of developing RA.

Researchers also associate obesity with several health issues, such as metabolic syndrome, that can exacerbate RA symptoms. For example, inflammation is a common feature of both obesity and metabolic syndrome.

7. Early life factors

Growing up with exposure to certain triggers, such as cigarette smoking, can increase a person’s risk of developing RA later in life.

The CDC report that people from a low-income background appear to have a higher risk of developing the disease.

A healthful diet can reduce the risk of many diseases, and it may play a role in RA management.

In addition, some researchers have suggested that certain substances in foods can trigger the onset of RA.

Authors of a study from January 2018 found that a type of bacteria in some milk and beef may trigger RA in people with genetic predispositions.

Anti-inflammatory foods may help with symptoms

In 2017, research published in Frontiers in Nutrition identified a number of foods that may help reduce inflammation, for example through antioxidant activity.

The authors recommended, among other foods:

  • raw or lightly cooked vegetables, especially legumes and green vegetables
  • spices, such as turmeric and ginger
  • seasonal fruits
  • probiotic yogurt

They urged people to avoid:

  • animal-based products
  • foods that contain high amounts of salt and oil, including many processed products

The researchers did not suggest that dietary interventions could prevent the development of RA.

However, incorporating anti-inflammatory foods into the diet may help reduce symptoms in people with this type of arthritis.

Takeaway

It is not clear exactly what causes RA, but some factors can increase the risk of developing it.

Some factors are unavoidable, but quitting smoking, maintaining a suitable body weight, and eating a healthful diet with limited amounts of processed food may help some people to prevent the onset of this painful condition.

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