A glass of lemon water looks like the most innocent thing in the world. It is almost calorie-free, refreshing, looks great in photos, and gives a feeling of internal cleansing. But teeth do not read posts about detoxifying. They react to simple chemistry: Acid that repeatedly reaches their surface is liable to soften and erode the outer protective layer.
This layer is called enamel. It is the hardest tissue in the human body, but it is not immune to acids. Acidic foods and beverages, including lemons, oranges, carbonated drinks, energy drinks, and some fruit juices, lower the pH level in the mouth. When the environment is acidic enough, minerals begin to leave the enamel in a process called demineralization.
In the first stage, you do not feel a thing. Later on, sensitivity to cold, heat, or sweets may appear. Teeth may look yellower, because the enamel becomes thinner and the dentin layer underneath is reflected. In more advanced cases, erosion, roughness, pain, and an increased risk of tooth decay appear.
How lemon water can damage your teeth
The main problem is not necessarily drinking lemon water, but the manner of drinking. One who sips slowly over an hour, holds the drink in the mouth, or drinks it several times a day, extends the duration of the teeth's exposure to acid. Brushing immediately after drinking an acidic beverage is also liable to worsen erosion, because the enamel is temporarily softened and the toothbrush acts on it like mechanical scrubbing.
There is also a myth that needs to be debunked: Lemon water does not "detoxify" the body. The liver and kidneys do this all the time, without the need for a sour morning ritual. Lemon can add flavor and encourage drinking for those who do not like plain water, but it has no magic ability to flush the body from the inside or significantly accelerate weight loss.
Those who suffer from reflux, heartburn, or esophagitis are liable to feel a worsening after acidic drinks. Here too, not every person will react in the same way. There are people who can drink lemon water without any problem, and there are those in whom even a small amount triggers a burning sensation. The body gives hints, and it is worth listening to them.
To reduce harm to teeth, you can drink the beverage in a relatively short time and not sip it for hours. You can use a straw to minimize contact with the front teeth, rinse the mouth with plain water afterward, and wait before brushing. The accepted recommendation is not to brush immediately after acidic exposure, but to give saliva time to neutralize part of the acid.
Saliva is an important defense mechanism. It washes away acids, returns minerals, and helps maintain balance in the mouth. Therefore, people with dry mouth, those taking medications that reduce saliva, mouth breathers, or those with certain diseases are liable to be at higher risk of tooth erosion. For them, daily acidic habits require much greater caution.
Children and teenagers are particularly exposed to prolonged drinking habits. A bottle of lemon water left beside them all day can create repeated exposure that goes unnoticed. Sour "health" drinks or natural juices are also not necessarily tooth-friendly just because they are natural.
The lemon itself is not the enemy. It adds flavor, vitamin C, and freshness to food and drink. But teeth need breaks from acid. As in many areas of health, the difference between a good habit and a harmful habit lies in the dosage, frequency, and the way it is done.
Dr. Itay Gal is a specialist in pediatrics, a sports and aviation physician, and the medical commentator for Maariv. For additional articles on various medical and technology topics, click here