Water retention and gut health: The underestimated connection

Many people know the unpleasant feeling: suddenly, the pants feel tighter, the legs feel heavy, and the belly appears bloated—even though nothing unusual has been eaten. Water retention, medically known as edema, is often considered a harmless side effect of warm weather, prolonged sitting, or hormonal fluctuations. But what many don’t know is that the gut plays a far more significant role in this context than previously thought. The close connection between gut health and water balance has long been known in traditional naturopathy—and modern research is increasingly rediscovering it.

When the Body Retains Water: What’s Really Behind It

Water retention occurs when fluid leaks from the blood vessels into the surrounding tissue and is not adequately drained. The lymphatic system and kidneys are normally responsible for regulating this balance. However, this finely tuned mechanism can be disrupted by many factors—and the gut is one of the most underestimated among them. Inflammatory processes in the gut, a disturbed intestinal mucosa, or an imbalance in the gut flora can have far-reaching effects on the body’s overall fluid balance.

In naturopathy, the gut is traditionally viewed as a central organ of well-being. Hildegard of Bingen, the medieval universal scholar and abbess, devoted special attention to the gut in her writings. She described how an “impure body”—that is, a sluggish, burdened gut—could disrupt the entire physical balance. This holistic perspective aligns remarkably well with what we now know about the connections between gut health and systemic processes in the body.

Particularly interesting is the role of the intestinal mucosa as a barrier. It regulates which substances from inside the gut may enter the bloodstream and which may not. If this barrier is weakened—a condition many naturopaths call “leaky gut”—undesirable molecules can pass into the blood and trigger a silent inflammatory response. Inflammation in the body often comes with altered vascular permeability, which in turn can promote the retention of tissue fluid. This creates a cycle that at first glance seems unrelated to the gut.

The intestinal mucosa is much more than a digestive structure—it is an active regulatory layer that influences the fluid balance of the entire body.

Gut Flora and Silent Inflammation: The Hidden Connection to Tissue

The microbiome—the community of trillions of microorganisms in our gut—has become one of the most discussed topics in health research in recent years. And for good reason: the gut flora influences far more than just digestion. It is in close communication with the immune system, the nervous system, and—as is becoming increasingly clear—the lymphatic and vascular systems. An imbalance in the microbiome, also called dysbiosis, can trigger silent, chronic inflammatory processes that may manifest, among other ways, as water retention.

Traditional healing systems intuitively understood these connections long before microscopes or lab tests existed. In medieval monastic medicine, bitter herbs were used not only to support digestion but also for conditions we would today describe as “internal burden.” Hildegard von Bingen products Hildegard of Bingen, for example, recommended wormwood and yarrow as plants that “drive the mucus from the body”—a vivid description of eliminating substances that burden the body. In this sense, bitter herbs were always also a form of internal cleansing for her.

Modern perspectives suggest that certain bacterial strains in the gut produce anti-inflammatory messenger substances, while others can fuel inflammation. When the balance shifts in favor of the inflammation-promoting strains, the body reacts in various ways—and the tissue responds sensitively to these subtle shifts. Targeted care of the microbiome through traditional herbs, fermented foods, and a fiber-rich diet has long been considered a sensible way in naturopathy to support this balance. Gut and digestion products

“Omnia membra in corpore quasi fratres sunt” – “All members in the body are like brothers.” Hildegard von Bingen, Causae et Curae (12th century). This statement aptly describes what naturopathy has always taught: no organ works in isolation—the gut influences the whole.

Especially the lymphatic system, which is closely connected to the gut, deserves special attention in this context. A large portion of lymph nodes is located in the abdominal cavity, and the lymphatic vessels of the gut—the so-called lacteals—play an important role in the body’s moisture balance. When the gut is chronically burdened, the lymphatic system can also be affected, making the drainage of tissue fluid more difficult. This connection explains why, in traditional naturopathy, gut cleanses and relief cures were often recommended for swelling tendencies.

Traditional Herbs: What Monastic Medicine Offers for Gut and Water Balance

The herbal knowledge of monastic medicine is a treasure refined and passed down over centuries. Hildegard of Bingen, as well as other herbalists like Paracelsus or Sebastian Kneipp, described plants traditionally used for conditions we today associate with sluggish gut, internal burden, or water retention. These plants were not understood as medicines in the modern sense but as foods and companions that should support the body’s natural balance. BitterKraft Original

Bitter plants played an outstanding role in this system. Bitter substances, called bitter compounds or amarae, have been valued since antiquity for the “internal order” of the body. Hildegard of Bingen described gentian, wormwood, and yarrow as herbs that “revive the sluggish body” and help the body resume its natural elimination processes. In her view, a well-functioning gut was the foundation for everything else—a conviction naturopathy still shares today.

Besides the classic bitter herbs, diuretic herbs like nettle, goldenrod, and dandelion were traditionally used in monastic medicine—not to fight symptoms but to support the body’s natural elimination work. These plants were often combined to support both the gut and kidneys in their natural functions. The combination of gut and kidney care was a proven concept in traditional medicine that today gains scientifically interesting support. Fasting products

Traditionally Valued Herbs for Gut and Inner Balance:

• Dandelion: Valued for centuries in European folk medicine as a spring herb. Traditionally used to invigorate the body after winter and support natural elimination.
• Nettle: Known in monastic medicine as a “cleansing” plant and historically used for water retention and spring cleansing. Considered one of the best-known native wild herbs.
• Wormwood: Described by Hildegard of Bingen as an important bitter plant that “revives the sluggish body.” Traditionally used for centuries to support digestive organs.
• Yarrow: Widely used in European herbal tradition and for internal imbalances. Hildegard of Bingen valued it for its “ordering” effect in the abdominal area.
• Goldenrod: Traditionally known in folk medicine as “kidney herb” and used for generations to support natural water elimination.
• Fennel: One of Europe’s oldest cultivated plants, especially valued by Hildegard of Bingen. Traditionally used for bloating, fullness, and general abdominal complaints.
• Milk Thistle: Historically known as a liver-supporting plant, which in holistic views works closely with the gut. Valued for centuries in Western herbal tradition. Liver products from Bitterkraft

What’s Behind Bitter Substances?

Bitter substances are secondary plant compounds that serve as natural protection for the plant. They have been known in human nutrition for thousands of years and were traditionally considered an important part of a balanced diet. In modern Western diets, bitter substances have largely been bred out in favor of sweeter, milder-tasting foods. Naturopathy views this loss as a possible factor in various imbalances in the body. Traditional bitter remedies like gentian, wormwood, or artichoke are therefore being rediscovered as valuable additions within a holistic lifestyle. At Bitterkraft.com, you will find a carefully curated selection of traditional bitter herbs and bitter substances—modeled after monastic medicine. BitterKraft Original

Holistic Support: What You Can Do in Everyday Life

Naturopathy always thinks in terms of connections and lifestyles, not isolated measures. When water retention and a burdened gut occur together, it’s worth taking a holistic look at daily life—at nutrition, exercise, stress levels, and conscious care of inner balance. Hildegard of Bingen spoke in this context of “discretio”—the inner order and balance she considered the foundation of all health. This idea is timeless and translates excellently into modern life.

A sluggish gut and water retention are often two sides of the same coin—caring for the gut supports the entire body’s balance.

From a nutritional perspective, naturopathy recommends a varied, fiber-rich diet that supplies the microbiome with diverse nourishment. Fermented foods like sauerkraut, kefir, or fermented vegetables have been a natural part of traditional European cuisine for centuries—and are now highly relevant again in naturopathy. At the same time, traditional concepts recommend reducing highly processed, sugary, and salty foods, as they can burden the microbiome and promote water retention.

Exercise also plays a central role. Unlike the blood vessel system, the lymphatic system has no pump of its own and relies on muscle activity to transport fluid back from the tissue. Regular, gentle movement such as walking, swimming, or yoga can stimulate lymph flow and help naturally reduce tissue fluid. In the Kneipp tradition, water treatments like contrast showers or cold dousing are additionally recommended as toning measures for the vascular and lymphatic systems—a simple but effective tool from naturopathy.

Stress is another often underestimated factor. Chronic stress influences the composition of the microbiome, can promote inflammatory processes, and directly affects gut health via the so-called gut-brain axis. Naturopathic concepts therefore always recommend paying attention to mental balance as well. Hildegard of Bingen saw humans as a unity of body, mind, and soul—a view increasingly recognized in modern psychosomatics. Regular breaks, conscious breathing, nature, and silence are not luxuries but components of a healthy lifestyle. Sleep and relaxation products

“Man must care for his body like a gardener cares for his garden.” – Hildegard of Bingen, paraphrased from Causae et Curae. This metaphor aptly describes how monastic medicine viewed the body: as a living system that needs care, attention, and the right conditions—not interventions, but accompaniment.

Those who want to follow the path of traditional naturopathy can also integrate targeted herbal cures into their daily routine. A classic spring cure with bitter herbs and diuretic plants—as practiced in monastic medicine since the Middle Ages—is a proven method to invigorate body and gut after winter. Such cures were not understood as treatments but as loving attention to one’s own body, a ritual of new beginnings. At Bitterkraft.com, you will find traditionally composed herbal products that follow this idea. all Bitterkraft products

The smartest strategy against water retention doesn’t start with the tissue—but with the gut. Caring for the gut means caring for the whole system.

In conclusion: the connection between gut health and water balance is neither new nor surprising—it has been intuitively recognized and practically applied in naturopathy and monastic medicine for centuries. What has changed is our ability to better understand and describe these connections. The wisdom of nature and of old herbalists like Hildegard of Bingen still has its place—as inspiration, as a historical foundation, and as an invitation to approach one’s own body with more attention and respect. A healthy gut is not just a matter of digestion—it is a foundation of overall well-being. Immune system products