That morning glass of lemon water is often hailed as the perfect health ritual, refreshing, vitamin C–rich, and said to boost metabolism. But while it can be beneficial in moderation, drinking it daily, especially on an empty stomach, may do more harm than good. The high acidity of lemon juice can trigger digestive discomfort, erode tooth enamel, and even interfere with certain medications. For some, it can worsen heartburn or cause bloating, while others may develop allergic reactions. These risks are often overlooked in favour of its trendy reputation. If you love lemon water, it’s important to know when and how to drink it safely so you can enjoy the benefits without falling into hidden health traps.7 side effects of lemon water you should know before drinking it dailyTriggers acidity and bloatingStudies by NIH confirm that lemon juice is naturally acidic. When taken daily, particularly before eating, it can irritate the stomach lining, causing bloating, heaviness, and discomfort. People with gastritis, acid reflux, or irritable bowel syndrome (IBS) are especially at risk.Can cause indigestion and stomach painWhile lemon water is meant to aid digestion, for some people it does the opposite. The sharp acidity can disrupt the stomach’s natural pH balance, leading to cramps, nausea, or even mild diarrhoea.Wears away tooth enamelCitric acid is a known enemy of tooth enamel. A study published in dentally says daily exposure to lemon water can make your teeth more sensitive, prone to decay, and even yellow over time. Dentists recommend drinking through a straw and rinsing your mouth with plain water afterwards.May cause dehydrationSurprisingly, lemon water can have mild diuretic effects, meaning it increases urination. Over time, this may lead to dehydration or electrolyte imbalance, especially if you’re not drinking enough plain water during the day.Interferes with certain medicationsResearch by NIH shows lemon juice can affect how your body absorbs some medications, potentially reducing their effectiveness. If you take regular medication, especially for blood pressure, diabetes, or thyroid, speak to your doctor before making lemon water a daily habit.Can worsen heartburn and hyperacidityIf you’re prone to acid reflux or hyperacidity, lemon water can make symptoms worse. The acid stimulates even more stomach acid production, leading to that burning sensation in the chest and throat.Risk of allergic reactionsResearch done by the American College of Allergy, Asthma and Immunology proves that, though rare, some people are allergic to citrus fruits. This can trigger symptoms like skin rash, swelling, itching, or even breathing difficulties. Always stop consumption and seek medical help if you notice these signs.How to enjoy lemon water safely

• Avoid drinking it first thing in the morning; have it after meals instead.
• Dilute well, mix with plenty of water to reduce acidity.
• Use a straw to protect your teeth from direct acid exposure.
• Rinse your mouth after drinking.
• Limit frequency, two to three times a week is enough for most people.

Lemon water can be a healthy addition to your lifestyle; it’s refreshing, hydrating, and packed with vitamin C. But when it becomes a daily, empty-stomach habit, it can tip from helpful to harmful. Over time, the acidity may upset your digestion, wear down tooth enamel, and even interfere with your body’s nutrient absorption. The key is moderation and paying attention to how your body responds. Enjoy it a few times a week, preferably after meals and in diluted form, so you reap all the benefits without risking unwanted side effects. By being mindful of how and when you drink it, you can keep lemon water as a refreshing ally in your health journey rather than an unsuspected problem.