Diarrhea is a common health issue, especially during the hot summer months. People often refer to it as an “upset stomach,” but this term is medically inaccurate. The condition involves more than just the stomach—it primarily affects the intestines. By understanding what diarrhea really is and how to prevent or treat it naturally, you can stay healthy and avoid discomfort during the warmer seasons. One surprisingly effective remedy comes from nature itself: blueberries.
What Is Diarrhea, Really?
Medically, diarrhea is defined as having three or more loose or watery bowel movements within a 24-hour period. The stool is typically liquid or mushy in texture. It is important to note that the popular term “upset stomach” does not accurately describe the mechanisms or the nature of this condition.
The core issue in diarrhea lies in the dysfunction of the intestines, not the stomach. When the intestines are irritated or inflamed, their normal function is disrupted. This leads to an increased frequency of bowel movements, a higher daily volume of stool, and a significant rise in water content in the stool.
More precisely, diarrhea is considered to be present when the total volume of stool exceeds 200 milliliters per day and the water content in the stool ranges from 85% to 95%. In cases of infectious diarrhea, such as those caused by viruses or bacteria, a person may have to go to the bathroom 20 to 30 times per day—sometimes as frequently as every 30 minutes.
Types and Duration
Diarrhea that lasts from a few days up to two or three weeks is classified as acute. If it continues beyond this period, it may indicate a more serious, chronic condition. Chronic diarrhea can be a symptom of a variety of underlying issues, such as:
- Irritable Bowel Syndrome (IBS)
- Crohn’s Disease
- Different types of enteropathy
- Chronic pancreatitis
- Chronic cholecystitis
- Celiac disease (gluten intolerance)
- Some forms of colorectal cancer
Each of these conditions requires specific medical attention and treatment, but for more typical, non-chronic diarrhea—especially when brought on by heat or dietary changes—natural remedies can be incredibly helpful.
Blueberries as a Natural Remedy
One of the simplest and most effective natural treatments for diarrhea involves dried blueberries. Blueberries have been used in traditional medicine for centuries due to their rich nutrient content and healing properties.
How to Use Blueberries for Diarrhea:
Take two tablespoons of dried blueberries, pour one cup (about 250 ml) of cold boiled water over them, and let it sit for about 8 hours. After that, strain the liquid and drink half a cup 3 to 4 times a day.
This remedy works gently and effectively to soothe the intestines and restore proper digestive function.
Nutritional Composition of Blueberries
Blueberries are a true superfood, packed with beneficial compounds that support both digestion and overall health. They contain:
- Proteins
- Fats
- Carbohydrates
- Ash and water
- Tannins (which help reduce inflammation and control intestinal issues)
- Organic acids such as citric, malic, succinic, and lactic acids
Blueberries are also rich in essential vitamins such as vitamin C and B-complex vitamins, as well as proteins and healthy fats.
Medicinal Use of Blueberries
Not just the fruits, but also the leaves of the blueberry plant are used for medicinal purposes. To preserve the berries for long-term use:
- Spread them in a thin layer on paper or cloth.
- Allow them to slightly wilt in the open air.
- Then dry them in an oven at a temperature of 60 to 70°C (140 to 158°F).
Properly dried blueberries do not leave any residue on the hands when touched and can be stored for several years without losing their medicinal qualities.
Blueberry leaves are collected during the flowering period and should be air-dried in a well-ventilated place.


















