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Esophagus and Stomach

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1. burning sensation in chest (heartburn), difficulty swallowing and sensation of lump in throat due to the feeling of the stomach acid coming up through the esophagus

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Overview

Gastroesophageal reflux disease (GERD) occurs when stomach acid repeatedly flows back into the tube connecting your mouth and stomach (esophagus). This backwash (acid reflux) can irritate the lining of your esophagus.

Many people experience acid reflux from time to time. However, when acid reflux happens repeatedly over time, it can cause GERD.

Most people are able to manage the discomfort of GERD with lifestyle changes and medications. And though it's uncommon, some may need surgery to ease symptoms.

Symptoms

Common signs and symptoms of GERD include:

A burning sensation in your chest (heartburn), usually after eating, which might be worse at night or while lying down

Backwash (regurgitation) of food or sour liquid

Upper abdominal or chest pain

Trouble swallowing (dysphagia)

Sensation of a lump in your throat

If you have nighttime acid reflux, you might also experience:

An ongoing cough

Inflammation of the vocal cords (laryngitis)

New or worsening asthma

When to see a doctor

Seek immediate medical care if you have chest pain, especially if you also have shortness of breath, or jaw or arm pain. These may be signs and symptoms of a heart attack.

Make an appointment with your doctor if you:

Experience severe or frequent GERD symptoms

Take over-the-counter medications for heartburn more than twice a week

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Causes

GERD is caused by frequent acid reflux or reflux of nonacidic content from the stomach.

When you swallow, a circular band of muscle around the bottom of your esophagus (lower esophageal sphincter) relaxes to allow food and liquid to flow into your stomach. Then the sphincter closes again.

If the sphincter does not relax as it should or it weakens, stomach acid can flow back into your esophagus. This constant backwash of acid irritates the lining of your esophagus, often causing it to become inflamed.

Risk factors

Conditions that can increase your risk of GERD include:

Obesity

Bulging of the top of the stomach up above the diaphragm (hiatal hernia)

Pregnancy

Connective tissue disorders, such as scleroderma

Delayed stomach emptying

Factors that can aggravate acid reflux include:

Smoking

Eating large meals or eating late at night

Eating certain foods (triggers) such as fatty or fried foods

Drinking certain beverages, such as alcohol or coffee

Taking certain medications, such as aspirin

Complications

Over time, chronic inflammation in your esophagus can cause:

Inflammation of the tissue in the esophagus (esophagitis). Stomach acid can break down tissue in the esophagus, causing inflammation, bleeding, and sometimes an open sore (ulcer). Esophagitis can cause pain and make swallowing difficult.

Narrowing of the esophagus (esophageal stricture). Damage to the lower esophagus from stomach acid causes scar tissue to form. The scar tissue narrows the food pathway, leading to problems with swallowing.

Precancerous changes to the esophagus (Barrett esophagus). Damage from acid can cause changes in the tissue lining the lower esophagus. These changes are associated with an increased risk of esophageal cancer.

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Gastroesophageal reflux disease (GERD) - Symptoms and causes

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GERD, in which stomach acid moves into the esophagus, causes discomfort and may lead to precancerous changes in the lining of the esophagus.

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GERD is causes by frequent acid reflux.

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Smoking

Eating large meals or eating late at night

Eating certain foods (triggers) such as fatty or fried foods

Drinking certain beverages, such as alcohol or coffee

Taking certain medications, such as aspirin

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Introduction

Gastro-esophageal reflux disease (GERD), one of the most prevalent gastrointestinal (GI) diseases in Western countries, is increasing in frequency in Asia [ 1]. The prevalence of symptom-based GERD in eastern Asia was reported as 6.2-7.1 % in 2010 [ 2, 3], whereas it was reported to be 2.5-4.8 % in 2005 [ 1, 4]. Endoscopy-based studies showed that the prevalence of reflux esophagitis in eastern Asia was 3-4 % before 2000, whereas other studies reported rates of 6.6-15.5 % from 2000 to 2005 and 4.3-15.7 % after 2005 [ 5].

Epidemiologic changes in GERD in Asia seem to be correlated with economic or environmental effects, changing Helicobacter pylori epidemics, and nutritional changes. Body weights are on the rise, diets are becoming less healthy, and people are becoming increasingly sedentary, resulting in metabolic alterations that increase obesity. Additionally, modern society imposes demands that may increase chronic stress. Stress activates behavioral and physiological response patterns, and maladaptation to chronic stress might play a role in many diseases [ 6, 7].

Recently, many lines of evidence have suggested that stress, a measure of adverse psychosocial influences in adult life, may play an important role in GERD [ 8- 10]. It has been shown that subjects who have been exposed to life stressors are more likely to complain of symptoms of GERD [ 8- 10]. On the other hand, the presence of troublesome GERD symptoms affects one's daily life and can thereby induce stress [ 11]. Health-related quality of life (HRQoL) in patients with reflux esophagitis is impaired in physical, psychological, and social aspects, and other studies have found that patients with GERD report reduced work productivity [ 11, 12]. Reflux esophagitis aggravates the stress and fatigue levels of daily life, but less is known about the association between stress and fatigue, which could be bi-directional.

Health check-ups have recently become popular in Korea. Health check-ups are provided as a promotion by workplaces or are frequently performed at the patient's own expense, such as a cancer-screening program [ 13]. Most Korean hospitals are equipped with a Healthcare Center to do comprehensive health check-ups including endoscopy.

The aim of this study was to investigate the association between stress and reflux esophagitis on a large scale among people using a Healthcare Center, generally regarded as representative of the general population. First, we divided the study population according to stress level into two groups and evaluated factors associated with high stress level. Second, we compared stress levels among subjects who had reflux esophagitis, those with peptic ulcer disease (PUD), and healthy controls. PUD, which is well known to be a GI disease related to stress, was analyzed as a disease control. Additionally, we compared fatigue levels, which could reflect conditions resulting from chronic stress, among the reflux esophagitis group, PUD group, and controls.

Materials and Methods

Subjects

The study population consisted of 9,033 subjects who had medical check-ups at the Health Promotion Center of Ewha Womans University Mok-Dong Hospital. Among them, 6,903 subjects (76.4 %) who were over 18 years old and agreed to participate in this study were enrolled. For the baseline examination, physical examination, blood tests, and upper endoscopy were performed and questionnaires were administered (Fig. ). The exclusion criteria were as follows: (1) subjects with prior major abdominal surgery ( n = 18), except for appendectomy, cholecystectomy, or hysterectomy; (2) subjects with stomach cancer ( n = 5); (3) subjects who had both reflux esophagitis and PUD ( n = 46) (Fig. ).

Questionnaires

Subjects were asked to complete a series of validated survey questionnaires to assess the severity of stress and fatigue.

Demographics and Other Variables

Demographic data and predictors for reflux esophagitis and psychosocial stress levels were as follows:

1. Demographics: gender, age

2. Specific factors related to reflux esophagitis and stress levels: (1) the presence of disease: hypertension (HTN), diabetes (DM); (2) alcohol consumption (drinking alcohol more than 2-3 times a week); (3) smoking (current smoker vs. non-smoker); (4) intake of coffee; (5) regular exercise; (6) obesity (body mass index (BMI ≥ 25 kg/m ²); (7) serious obesity (BMI ≥ 30 kg/m ²); (8) education level (less than college graduate was categorized as lower education); (9) marital status (married vs. other); (10) income per month (earning less than US $4000 ($1 ≈ 1,000 won) was categorized as low income).

Endoscopic Examinations

All study subjects underwent upper-GI endoscopic examinations, which were performed by two well-trained gastroenterologists, each of whom had at least 5 years of endoscopy experience. The presence and severity of reflux esophagitis were classified using the Los Angeles (LA) classification as grade A-D (LA-A to D) and were based on the longest length of a mucosal break and the confluence of erosions [ 20]. Minimal change in reflux esophagitis was excluded because of poor reliability. PUD was defined as having an active or healing-stage gastric and/or duodenal ulcer; however, the scar stage of PUD was excluded.

Statistical Analysis

The χ ² test was used for categorical comparisons, and one-way analysis of variance with post hoc group differences corrected for multiple comparisons (Bonferroni correction) was used for comparison of continuous variables between the stress group and the reference group.

We performed correlation analyses using the Pearson product-moment correlation coefficient between BEPSI-K scores and FSS scores and the variables of age, income, and reflux grade. Student's t tests were used to compare BEPSI-K scores and FSS scores between different groups based on gender, underlying disease (reflux esophagitis, PUD, DM, HTN), health-related behaviors (smoking habits, alcohol use, coffee, regular exercise, obesity), and socioeconomic factors (marital status, education). No corrections for multiple comparisons were made at this time. The results from these analyses were primarily used to develop a model explaining factors independently associated with BEPSI-K scores and FSS by entering factors associated with BEPSI-K scores and FSS at p < 0.05 into a standard multiple linear regression analysis. Unless otherwise stated, significance was accepted at the 5 % level, and the data are presented as mean ± standard deviation.

Ethics Statement

This study was approved by the institutional review board of Ewha Womans University Mok-dong Hospital.

Results

Baseline Characteristics of the Study Subjects

A total of 6,834 subjects were included in this study. Women accounted for 45 % of subjects, and the mean age of all subjects (±SD) was 43.9 (±9.8) years. Reflux esophagitis was found in 407 (6.0 %) and active to healing-stage PUD was found in 404 subjects (gastric ulcer, n = 291; duodenal ulcer, n = 171; gastric and duodenal ulcer, n = 58).

The study population was classified into two groups according to BEPSI-K scores: the stress group and the reference group. The stress group was defined as those having a BEPSI-K score >2.4. A total of 902 subjects were included in the stress group, with a mean BEPSI-K score of 2.92 ± 0.61 (Table ). Compared with the reference group, women were more common, and the mean age was younger in the stress group. The proportion of coffee drinkers was relatively smaller in the stress group. Subjects who were current smokers and those with low education and low income were more common in the stress group than the reference group. Subjects with reflux esophagitis were more prevalent in the stress group compared with the reference group (8.2 vs. 5.6 %, p = 0.003). The prevalence of PUD in the stress group was higher than that in the reference group; however, the difference did not reach statistical significance (7.1 vs. 5.7 %; p = 0.111). Seriously obese people (BMI ≥ 30 kg/m ²) were more common in the high-stress group (4.5 vs. 2.7 %; p = 0.006).

Univariate and Multivariate Analysis of Predictors for the Stress Group

In univariate analysis, female gender, current smoking, serious obesity (BMI ≥ 30 kg/m ²), low income, low education status, and high fatigue level all had significantly increased odds ratios in the high-stress group. However, aging and coffee drinking were inversely associated with high stress. Hypertension, diabetes mellitus, PUD, alcohol use, regular exercise, marital status, and obesity (BMI ≥ 25 kg/m ²) were not significantly related with high stress (Table ).

In multivariate analysis, reflux esophagitis was a significant independent predictor for high stress (OR, 1.94; 95 % CI, 1.25-3.02; p < 0.001). Current smoking (OR, 1.73; 95 % CI, 126-2.36; p < 0.001) and low income (OR, 1.34; 95 % CI, 1.02-1.79; p < 0.33) were also significant predictors of psychosocial stress. High fatigue level was significantly associated with high stress level (OR, 3.79; CI 2.93-4.90; p < 0.001). However, coffee consumption had a protective effect against stress (OR, 0.64; 95 % CI, 0.43-0.94; p = 0.021).

Comparison of Stress Levels in the Reflux Esophagitis, Peptic Ulcer Disease, and Control Groups

The stress level of the reflux esophagitis group was compared with that of the PUD group and controls. Subjects with reflux esophagitis had significantly higher BEPSI-K scores compared with controls (1.75 ± 0.67 vs. 1.68 ± 0.64, p = 0.027). BEPSI-K scores were also higher in the reflux esophagitis group than in the PUD group, but the difference did not reach statistical significance (1.75 ± 0.67 vs. 1.70 ± 0.67, p = 0.290). There was no significant difference in BEPSI-K score between the PUD group and controls (1.70 ± 0. 66 vs. 1.68 ± 0.64, p = 0.429) (Fig. ).

The mean BEPSI-K score in LA-C reflux esophagitis patients was 2.05 ± 0.96, that in LA-B was 1.78 ± 0.70, and that in LA-A was 1.74 ± 0.66. The severity of reflux esophagitis was positively correlated with BEPSI-K score in correlation analysis ( r = 0.032, p = 0.008) (Fig. ). The proportion of subjects with high BEPSI-K scores (BEPSI-K ≥ 2.4) was greater in the reflux esophagitis group compared with the control group (13.5 vs. 9.4 %) ( p < 0.001).

Comparison of Fatigue Score in the Reflux Esophagitis, Peptic Ulcer Disease, and Control Groups

BEPSI-K scores were positively correlated with FSS ( p < 0.001), but there was no significant difference in FSS level between the reflux esophagitis and control groups (3.12 ± 1.33 vs. 3.17 ± 1.34, p = 0.631). Also, there was no significant difference in FSS level between the PUD and control groups (3.02 ± 1.34 vs. 3.17 ± 1.34, p = 0.569).

Discussion

The key finding in the present study was an association of psychosocial stress and reflux esophagitis, which is highly prevalent in Korea. In subjects with reflux esophagitis, the OR was 1.94 for high stress after adjusting for several confounders, and the mean stress score in the reflux esophagitis group was higher than that in PUD or controls. Furthermore, the stress score showed a significantly increasing trend with increasingly severe grade of reflux esophagitis.

The medical literature on humans and animals strongly indicates that stress has adverse effects on the organism. In populations of patients with coronary heart disease, prospective studies showed that depression, anxiety, and stress may cause coronary heart disease and affect survival [ 6]. Psychosocial factors including stress also alter the function of the GI tract and GI symptom perception in patients with GERD. The relationship of stress to GI function is viewed as a direct consequence of bidirectional modulation by the central nervous system, including motor responses, pain modulation, and even immune function [ 21].

Previous studies have shown that stress can produce altered GI motility and symptoms. In a Gallup Poll, 64 % of individuals with heartburn, the major symptom of GERD, reported that stress increased their symptoms [ 22]. Stress can exacerbate heartburn symptoms in GERD patients by enhancing perceptual response to intra-esophageal acid exposure [ 21, 23]. Also, many other studies have reported increased frequency of GERD symptoms under specific stressful conditions [ 24]. In one study, stress did not influence objective measurements of acid reflux; however, chronic reflux patients who were chronically anxious and exposed to prolonged stressful stimuli may be more likely to perceive low-intensity esophageal stimuli as painful reflux symptoms [ 8].

In a previous study, higher levels of anxiety induced an overall tendency toward nonpropulsive activity of the esophagus [ 9]. Acute stressors increased resting lower-esophageal sphincter pressure and impaired sphincter relaxation, thus delaying acid clearance from the esophagus [ 25]. In a study that assessed gastric acid output in relation to personality traits, it was found that subjects who were considered to have a higher level of impulsivity and expressed emotions more freely were more likely to react with a marked increase in gastric acid output when stimulated by stress [ 10]. These results suggest that stress could actually induce objective reflux of gastric contents and eventually result in reflux esophagitis regardless of symptom presence. Furthermore, stress is believed to induce reflux esophagitis by increasing esophageal mucosal permeability. In the experimental rat model, acute stress increases submucosal mast cell and acid pepsin mucosal permeability, and electron microscopy showed dilated intercellular spaces in mucosa from stressed rats [ 26].

Stress may affect health-related behaviors such as smoking, diet, alcohol consumption, or physical activity, which in turn may influence the risk of reflux esophagitis. Alcohol drinking and cigarette smoking exacerbate reflux by diminishing lower esophageal sphincter pressure [ 27, 28]. These behaviors could result in increase of reflux in stress condition. Also, exposure to chronic psychological stressors causes some individuals to consume food in excess of requirements, and then this may culminate in obesity [ 29]. Obesity has been established as a risk factor for GERD [ 30]. In the present study, confounding variables such as smoking, high obesity (BMI ≥ 30 kg/m ²) were significantly related to stress. However, multivariate analysis showed that having reflux esophagitis was an independent predictor for stress after adjusting for these factors.

On the other hand, chronic reflux symptoms could be a very bothersome experience in daily living, and the associated sleep disturbance or decreased work productivity can be another important source of stress [ 31]. The higher level of stress in the reflux esophagitis group may represent the impact of troublesome reflux symptoms on HRQoL in individuals. Wang et al. [ 32] demonstrated that GERD was associated with significantly impaired HRQoL and significant daytime sleepiness in Chinese individuals.

The relationship between stress and reflux esophagitis is distinctive. The positive correlation observed between reflux esophagitis and stress was not demonstrated in the PUD group. PUD is another GI disease that has been associated with stress, although the role of psychosocial factors in the development of ulcers remains incompletely understood [ 33]. The effect of stress on personal traits and high acid secretion may play an important role in the pathogenesis of PUD. However, the role of infection with H. pylori and the use of non-steroidal anti-inflammatory drugs might be more important in the pathophysiology of PUD; in the present study, these factors were not evaluated.

We also compared fatigue levels in the reflux esophagitis, PUD, and control groups. Fatigue score was positively correlated with BEPSI-K score; however, fatigue levels were not significantly different among the three groups. In one study, vital exhaustion, a cardinal symptom of fatigue, was an independent predictor of aggravations of heartburn [ 34]. Fatigue, which may in part result from sustained stress, may represent a psychophysiological symptom complex and has a close relationship with chronic conditions such as multiple sclerosis and chronic liver disease. Fatigue may result from cumulative stressful events. However, a correlation of fatigue with active reflux esophagitis or PUD was not found in the present study.

The present study has several strengths. First, this study enrolled a large sample of 6,834 ethnically homogenous participants with a high response rate (75.7 %). Two-thirds of the study population from the Healthcare Center in the present study were offered a routine health screening check-up as a reward, and only 1/3 paid their own expenses. The study population might be a representative subgroup of the general population. Second, the present study was conducted with high-quality methodology. We used structured translated questionnaires with cross-cultural validation [ 16, 18]. Reflux esophagitis was evaluated with upper endoscopy, the gold standard for the diagnosis of esophagitis, by experienced specialists in endoscopy. Also, all subjects underwent endoscopy. A comprehensive medical check-up in Korea usually includes upper endoscopy because of the high incidence of gastric cancer and relatively cheap cost.

We also acknowledge some limitations. First, we used a self-report system to collect our data. Recall and responder bias may affect the interpretation of results, although we have no reason to suspect that this bias was different among the case and control groups, and we used well-validated questionnaires. Another limitation is that we enrolled individuals who underwent medical check-ups. There might be selection bias; a previous study in Korea demonstrated that the health-screening population had higher income and educational status compared with the general Korean population. However, other factors such as BMI, smoking, alcohol habit, or co-morbidities were comparable to the background population [ 13]. Furthermore, the participation rate in the present study was acceptable, and the study scale was huge.

In summary, we found the perceived stress level measured by a standardized, well-established instrument to be higher in individuals with reflux esophagitis. The present study clearly suggests that psychosocial stress might have a significant relationship with reflux esophagitis and may have a potential role in the symptom presentation and natural history. Clinicians need to be sensitive to the close association between stress and reflux esophagitis and the strong possibility that patients with refractory GERD may have comorbid psychosocial health problems.

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The Association Between Reflux Esophagitis and Psychosocial Stress

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Gastro-esophageal reflux disease (GERD), one of the most prevalent gastrointestinal (GI) diseases in Western countries, is increasing in frequency in Asia [ 1]. The prevalence of symptom-based GERD in eastern Asia was reported as 6.2-7.1 % in 2010 [ 2, 3], whereas it was reported to be 2.5-4.8 % in 2005 [ 1, 4].

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Antacids such as Tums can provide relief by providing a calcium carbonate which lessens the exposure to the stomach acid

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YES! Many studies have shown GERD symptoms get worse in stressful situations.

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Do you find your symptoms of acid reflux or gastroesophageal reflux disease (GERD) acting up at the worst times - like during a job interview or right before your daughter's wedding? Most people who experience heartburn might stay away from Uncle Ned's spicy chili and pass up orange juice with breakfast. But they may be less aware of how meeting the parents for the first time or giving a presentation may affect their symptoms.

According to some studies and surveys, stress may very well be another trigger for heartburn. But with some effective coping techniques, you can calm your stomach even during the most trying times.

The connection

Lifestyle factors can play a role in how a disease affects an individual. A 2009 study looked at health surveys of over 40,000 Norwegians and found that people who reported work-related stress were significantly more at risk for GERD symptoms. People who said they had low job satisfaction were twice as likely to have GERD compared with those who reported high job satisfaction.

A more recent study, published in Internal Medicine, interviewed 12,653 people with GERD and found that nearly half reported stress as the biggest factor that worsened symptoms, even when on medication.

Does stress really make it worse?

It's still debatable whether or not stress actually increases the production of stomach acid or physically creates a worsening in acid. Currently, many scientists believe that when you're stressed, you become more sensitive to smaller amounts of acid in the esophagus.

In 1993, researchers published in the that people with acid reflux who were anxious and stressed reported having more painful symptoms related to acid reflux, but no one showed an increase in gastric acid. In other words, though people consistently reported feeling more discomfort, the scientists didn't find any increase in total acid produced.

Another study from 2008 added further support to this idea. When researchers exposed people with GERD to a stressful noise, they also found that it increased their symptoms by making them more sensitive to acid exposure.

Is it all in your head?

Does this mean that the symptoms are all in your head? Not likely. Researchers theorize that stress may cause changes in the brain that turn up pain receptors, making you physically more sensitive to slight increases in acid levels. Stress can also deplete the production of substances called prostaglandins, which normally protect the stomach from the effects of acid. This could increase your perception of discomfort.

Stress, coupled with exhaustion, may present even more body changes that lead to increased acid reflux. Regardless of what exactly happens in the brain and the body, those who experience symptoms of acid reflux know that stress can make them feel uncomfortable, and treating lifestyle factors is important.

What can you do?

Adopting coping techniques for managing stress in your life can help reduce your risk of conditions such as heart disease, stroke, obesity, irritable bowel syndrome (IBS), and depression. The better you deal with stress, the better you'll feel.

Exercise

Exercise helps loosen up tight muscles, gets you away from the office, and releases natural, feel-good hormones. Exercise can also help you lose weight, which can help reduce the pressure on your abdomen.

Avoid trigger foods

This is particularly important if you're under stress, as you're likely to be more sensitive to heartburn-triggering foods like chocolate, caffeine, citrus fruits and juices, tomatoes, spicy foods, and fatty foods.

Get enough sleep

Stress and sleep form a cycle. Sleep is a natural stress reducer and less stress can lead to better sleep. To help avoid heartburn symptoms while you snooze, keep your head elevated.

Practice relaxation techniques

Try out guided imagery, yoga, tai chi, or relaxing music.

Learn to say no

Prioritize people and activities. It's OK to turn down the things that don't rate high on your priority list.

Laugh

Watch a funny movie, go see a comedian, or get together with friends. Laughter is one of the best natural stress relievers.

Spend time with your pet

If you don't have a pet, consider getting one. Pets can help calm and rejuvenate you.

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Do you find your symptoms of acid reflux or gastroesophageal reflux disease (GERD) acting up at the worst times - like during a job interview or right before your daughter's wedding? Most people who experience heartburn might stay away from Uncle Ned's spicy chili and pass up orange juice with breakfast.

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What is an Antacid and how does it help reduce acid reflux?

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What is an Antacid and how does it help reduce acid reflux?

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Antacids neutralize (reduce) excess stomach acid to relieve heartburn, sour stomach, acid indigestion, and stomach upset. Main ingredient: calcium carbonate.