Gastroparesis - Epidemiology Forecast

List of Tables

Gastroparesis Insights and Trends

According to DelveInsight's analysis, the total diagnosed prevalent cases of gastroparesis were approximately 724,000 in the United States in 2025.
In the US, the highest etiology-specific cases accounted for diabetes (57%), followed by postsurgical cases (15%) and drug-induced cases (11%) in 2025.
Gastroparesis cases can be categorized based on the severity of delayed gastric emptying as mild (<20% gastric retention), moderate (20-29% gastric retention), and severe (>=30% gastric retention). As per the estimates, in the US, mild cases represent the largest share of gastroparesis at 43%, followed by severe cases.
Diagnosis of gastroparesis is primarily confirmed by demonstrating delayed gastric emptying in the absence of mechanical obstruction. The gold standard test is gastric emptying scintigraphy.
A major unmet need in gastroparesis is the lack of early and accurate diagnosis, leading to significant underdiagnosis and delayed treatment initiation.

DelveInsight's 'Gastroparesis - Epidemiology Forecast - 2036' report delivers an in-depth understanding of the gastroparesis, historical and forecasted epidemiology, in the United States, EU4 (Germany, Spain, Italy, and France) and the United Kingdom, and Japan.

Gastroparesis Understanding and Diagnosis Algorithm

Gastroparesis Overview and Diagnosis

Gastroparesis is a chronic gastrointestinal disorder characterized by delayed gastric emptying without any mechanical obstruction. It commonly occurs in people with long-standing diabetes but can also arise from post-surgical complications, medications, or idiopathic causes. Patients typically experience nausea, vomiting, early satiety, bloating, and abdominal pain, which can significantly impact nutrition and quality of life. The condition can lead to complications such as malnutrition, dehydration, and erratic blood glucose levels, particularly in diabetic patients. Its chronic and relapsing nature often requires long-term management and monitoring.

Gastroparesis Diagnosis

Diagnosis involves ruling out mechanical obstruction and confirming delayed gastric emptying. Common tools include gastric emptying scintigraphy (the gold standard), breath tests, and upper endoscopy. Physicians also assess underlying causes such as diabetes and review medications that may impair gastric motility, ensuring a comprehensive evaluation before confirming gastroparesis. Additional tests like wireless motility capsules and imaging studies may be used in complex cases. Accurate diagnosis is crucial to differentiate gastroparesis from other functional gastrointestinal disorders with similar symptoms.

Gastroparesis Epidemiology

Key Findings from Gastroparesis Epidemiological Analysis and Forecast

Among the 7MM, the US accounted for the highest number of diagnosed prevalent cases of gastroparesis with ~724,000 cases in 2025.
In the US in 2025, the highest age-specific cases were seen in the 65+ age group, followed by those aged 48-57, while the lowest were in the 18-27 age group.
Gastroparesis as a disease predominantly affects women, with ~70% of the diagnosed patients being females, while only ~30% of the diagnosed patients are males.
Among etiology-specific cases across the 7MM, diabetes has the highest prevalence, followed by postsurgical causes, drug-induced cases, and then idiopathic cases.

Scope of the Report:

The report covers a segment of a descriptive overview of Gastroparesis, explaining its causes, signs and symptoms, and pathogenesis.
Comprehensive insight has been provided into the epidemiology segments and forecasts, the future growth potential of the diagnosis rate, and disease progression.

Report Insights

Gastroparesis Patient Population Forecast

Report Key Strengths

Epidemiology-based (Epi-based) Bottom-up Forecasting
11-year Forecast
Patient Burden Trends (by geography)

FAQs:

What are the disease risks, burdens, and unmet needs of gastroparesis? What will be the growth opportunities across the 7MM concerning the patient population with gastroparesis?
What is the historical and forecasted gastroparesis patient pool in the US, EU4 (Germany, France, Italy, and Spain), the UK, and Japan?

Reasons to Buy:

Insights on patient burden/disease prevalence, evolution in diagnosis, and factors contributing to the change in the epidemiology of the disease during the forecast years.
To understand key opinion leaders' perspectives on the diagnostic challenges to overcome barriers in the future.
Detailed insights into various factors hampering disease diagnosis and other existing diagnostic challenges.

Product Code: DIEI0085

1. Key Insights

2. Report Introduction

3. Executive Summary

4. Epidemiology Forecast Methodology of Gastroparesis

5. Gastroparesis Epidemiology Overview at a Glance

5.1. Patient Share (%) Distribution by Country in 2025 in the 7MM
5.2. Patient Share (%) Distribution by Country in 2036 in the 7MM

6. Disease Background and Overview of Gastroparesis

6.1. Introduction
6.2. Causes
6.3. Signs And Symptoms
6.4. Diagnosis
- 6.4.1. Differential Diagnosis
- 6.4.2. Diagnostic Algorithm
- 6.4.3. Diagnostic Guidelines

7. Epidemiology and Patient Population of Gastroparesis

7.1. Key Findings
7.2. Assumption and Rationale
7.3. Total Diagnosed Prevalent Cases of Gastroparesis in the 7MM
7.4. The United States
- 7.4.1. Total Diagnosed Prevalent Cases of Gastroparesis in the United States
- 7.4.2. Etiology-specific Cases of Gastroparesis in the United States
- 7.4.3. Gender-specific Diagnosed Prevalent Cases of Gastroparesis in the United States
- 7.4.4. Age-specific Diagnosed Prevalent Cases of Gastroparesis in the United States
- 7.4.5. Total Cases of Gastroparesis by the Severity of Delayed Gastric Emptying in the United States
- 7.4.6. Treated cases of Gastroparesis in the United States
7.5. EU4 and the UK
- 7.5.1. Total Diagnosed Prevalent Cases of Gastroparesis in EU4 and the UK
- 7.5.2. Etiology-specific Cases of Gastroparesis in EU4 and the UK
- 7.5.3. Gender-specific Diagnosed Prevalent Cases of Gastroparesis in EU4 and the UK
- 7.5.4. Age-specific Diagnosed Prevalent Cases of Gastroparesis in EU4 and the UK
- 7.5.5. Total Cases of Gastroparesis by the Severity of Delayed Gastric Emptying in EU4 and the UK
- 7.5.6. Treated cases of Gastroparesis in EU4 and the UK
7.6. Japan
- 7.6.1. Total Diagnosed Prevalent Cases of Gastroparesis in Japan
- 7.6.2. Etiology-specific Cases of Gastroparesis in Japan
- 7.6.3. Gender-specific Diagnosed Prevalent Cases of Gastroparesis in Japan
- 7.6.4. Age-specific Diagnosed Prevalent Cases of Gastroparesis in Japan
- 7.6.5. Total Cases of Gastroparesis by the Severity of Delayed Gastric Emptying in Japan
- 7.6.6. Treated cases of Gastroparesis in Japan

8. Appendix

8.1. Bibliography
8.2. Report Methodology

9. DelveInsight Capabilities

10. Disclaimer

11. About DelveInsight

Product Code: DIEI0085

List of Tables

Table 1: Summary of Gastroparesis Epidemiology (2022-2036)
Table 2: Evaluation of Gastroparesis
Table 3: Gastroparesis Diagnostic Testing Recommendations
Table 4: Gastroparesis Diagnostic Testing Recommendations
Table 5: Total Diagnosed Prevalent Cases of Gastroparesis in the United States, in Thousands (2022-2036)
Table 6: Etiology-specific Cases of Gastroparesis in the United States, in Thousands (2022-2036)
Table 7: Age-specific Cases of Gastroparesis in the United States, in Thousands (2022-2036)
Table 8: Gender-specific Cases of Gastroparesis in the United States, in Thousands (2022-2036)
Table 9: Total Cases of Gastroparesis by the Severity of Delayed Gastric Emptying in the United States, in Thousands (2022-2036)
Table 10: Treated Cases of Gastroparesis in the United States, in Thousands (2022-2036)
Table 11: Total Diagnosed Prevalent Cases of Gastroparesis in EU4 and the UK, in Thousands (2022-2036)
Table 12: Etiology-specific Cases of Gastroparesis in Germany, in Thousands (2022-2036)
Table 13: Etiology-specific Cases of Gastroparesis in France, in Thousands (2022-2036)
Table 14: Etiology-specific Cases of Gastroparesis in Italy, in Thousands (2022-2036)
Table 15: Etiology-specific Cases of Gastroparesis in Spain, in Thousands (2022-2036)
Table 16: Etiology-specific Cases of Gastroparesis in the UK, in Thousands (2022-2036)
Table 17: Etiology-specific Cases of Gastroparesis in EU4 and the UK, in Thousands (2022-2036)
Table 18: Age-specific Cases of Gastroparesis in Germany, in Thousands (2022-2036)
Table 19: Age-specific Cases of Gastroparesis in France, in Thousands (2022-2036)
Table 20: Age-specific Cases of Gastroparesis in Italy, in Thousands (2022-2036)
Table 21: Age-specific Cases of Gastroparesis in Spain, in Thousands (2022-2036)
Table 22: Age-specific Cases of Gastroparesis in the UK, in Thousands (2022-2036)
Table 23: Age-specific Cases of Gastroparesis in EU4 and the UK, in Thousands (2022-2036)
Table 24: Gender-specific Cases of Gastroparesis in Germany, in Thousands (2022-2036)
Table 25: Gender-specific Cases of Gastroparesis in France, in Thousands (2022-2036)
Table 26: Gender-specific Cases of Gastroparesis in Italy, in Thousands (2022-2036)
Table 27: Gender-specific Cases of Gastroparesis in Spain, in Thousands (2022-2036)
Table 28: Gender-specific Cases of Gastroparesis in the UK, in Thousands (2022-2036)
Table 29: Gender-specific Cases of Gastroparesis in EU4 and the UK, in Thousands (2022-2036)
Table 30: Total Cases of Gastroparesis by the Severity of Delayed Gastric Emptying in Germany, in Thousands (2022-2036)
Table 31: Total Cases of Gastroparesis by the Severity of Delayed Gastric Emptying in France, in Thousands (2022-2036)
Table 32: Total Cases of Gastroparesis by the Severity of Delayed Gastric Emptying in Italy, in Thousands (2022-2036)
Table 33: Total Cases of Gastroparesis by the Severity of Delayed Gastric Emptying in Spain, in Thousands (2022-2036)
Table 34: Total Cases of Gastroparesis by the Severity of Delayed Gastric Emptying in the UK, in Thousands (2022-2036)
Table 35: Total Cases of Gastroparesis by the Severity of Delayed Gastric Emptying in EU4 and the UK, in Thousands (2022-2036)
Table 36: Treated Cases of Gastroparesis in EU4 and the UK, in Thousands (2022-2036)
Table 37: Total Diagnosed Prevalent Cases of Gastroparesis in Japan, in Thousands (2022-2036)
Table 38: Etiology-specific Cases of Gastroparesis in Japan, in Thousands (2022-2036)
Table 39: Age-specific Cases of Gastroparesis in Japan, in Thousands (2022-2036)
Table 40: Gender-specific Cases of Gastroparesis in Japan, in Thousands (2022-2036)
Table 41: Total Cases of Gastroparesis by the Severity of Delayed Gastric Emptying in Japan, in Thousands (2022-2036)
Table 42: Treated Cases of Gastroparesis in Japan, in Thousands (2022-2036)

List of Figures

Figure 1: Overview of Gastroparesis
Figure 2: Symptoms of Gastroparesis
Figure 3: Total Diagnosed Prevalent Cases of Gastroparesis in the United States (2022-2036)
Figure 4: Etiology-specific Cases of Gastroparesis in the United States (2022-2036)
Figure 5: Age-specific Cases of Gastroparesis in the United States (2022-2036)
Figure 6: Gender-specific Cases of Gastroparesis in the United States (2022-2036)
Figure 7: Total Cases of Gastroparesis by the Severity of Delayed Gastric Emptying in the United States (2022-2036)
Figure 8: Treated Cases of Gastroparesis in the United States (2022-2036)
Figure 9: Total Diagnosed Prevalent Cases of Gastroparesis in EU4 and the UK (2022-2036)
Figure 10: Etiology-specific Cases of Gastroparesis in EU4 and the UK (2022-2036)
Figure 11: Age-specific Cases of Gastroparesis in EU4 and the UK (2022-2036)
Figure 12: Gender-specific Cases of Gastroparesis in EU4 and the UK (2022-2036)
Figure 13: Total Cases of Gastroparesis by the Severity of Delayed Gastric Emptying in EU4 and the UK (2022-2036)
Figure 14: Treated Cases of Gastroparesis in EU4 and the UK (2022-2036)
Figure 15: Total Diagnosed Prevalent Cases of Gastroparesis in Japan (2022-2036)
Figure 16: Etiology-specific Cases of Gastroparesis in Japan (2022-2036)
Figure 17: Age-specific Cases of Gastroparesis in Japan (2022-2036)
Figure 18: Gender-specific Cases of Gastroparesis in Japan (2022-2036)
Figure 19: Total Cases of Gastroparesis by the Severity of Delayed Gastric Emptying in Japan (2022-2036)
Figure 20: Treated Cases of Gastroparesis in Japan (2022-2036)

Gastroparesis - Epidemiology Forecast - 2036

Description

Table of Contents

List of Tables

Gastroparesis Insights and Trends

Gastroparesis Epidemiology

Scope of the Report:

Report Insights

Report Key Strengths

FAQs:

Reasons to Buy:

Table of Contents

1. Key Insights

2. Report Introduction

3. Executive Summary

4. Epidemiology Forecast Methodology of Gastroparesis

5. Gastroparesis Epidemiology Overview at a Glance

6. Disease Background and Overview of Gastroparesis

7. Epidemiology and Patient Population of Gastroparesis

8. Appendix

9. DelveInsight Capabilities

10. Disclaimer

11. About DelveInsight

List of Tables

List of Figures