It can damage your teeth
Although a squeeze of lemon in your water every day may seem harmless, it can wreak some major havoc on your pearly whites. Since lemons are highly acidic, frequent exposure can erode your tooth enamel, the American Dental Association warns. If you’re not sure what eroded enamel would look like, imagine your teeth with a yellow tint and a coarse feeling when you touch them to the tongue.
It can upset your stomach
Too much of anything is a bad thing, even when it comes to lemon water. While lemon juice contains a wide range of health benefits, squeezing too much in your water can cause dangerous side effects to your health including worsening ulcers and developing GERD.