Despite its popularity and some very convincing health perks, lemon water is not suitable for everyone. The acidity and chemical nature of lemon juice mean that, for some, it can cause or worsen health issues.
People with acid-related or digestive conditions: People with gastroesophageal reflux disease (GERD), chronic acid reflux, gastritis, ulcers, or sensitive stomachs should keep a safe distance from this acidic drink. Why? The citric acid in lemon can irritate the stomach lining or esophagus. For these individuals, lemon water may trigger heartburn, acid regurgitation, bloating, nausea, or worsen existing inflammation. In fact, drinking lemon water on an empty stomach may intensify such discomfort.
People with dental sensitivity or weak tooth enamel: Frequent consumption, especially undiluted or sipped slowly, may erode tooth enamel. Citrus acid gradually weakens enamel, increasing the risk of dental sensitivity, cavities, and even long-term damage. Over time, enamel erosion can lead to permanent dental problems.
People prone to mouth ulcers or oral issues: If you often get mouth ulcers, canker sores, or have sensitive oral tissue, the acid in lemon water may irritate and prolong healing.
Individuals on certain medications: The acidic nature of lemon may interfere with the absorption or effectiveness of certain medications (especially those sensitive to stomach pH or requiring a stable pH for proper absorption).
People sensitive to citrus (migraines or allergies): Citrus fruits like lemon may trigger migraines or headaches in some people, possibly due to compounds like tyramine. Additionally, allergic reactions to citrus (though rare) can include skin rash, swelling, or respiratory symptoms.
People at risk of dehydration or with kidney or bladder issues: Lemon water can have a mild diuretic effect, leading to increased urination. Without adequate hydration or in individuals prone to dehydration or urinary irritation, this may aggravate their condition. For people with kidney problems, frequent high intake may require serious medical consideration.