Your body is an incredible machine. We tend to have this belief that it’s up to someone else to prescribe us medications to make us healthy, but in reality, your body does most of the work. And if you’re listening, your body will tell you when things are going wrong. Here are some things to watch out for and what they might mean.

1. Craving sour foods.

Craving sour foods is pretty common when your body is going through hormonal changes, like when you’re pregnant. But it can also be an indication that your liver and gall bladder are having trouble keeping up with your body’s demand for them. It may be a good idea to see a doctor and get that checked out if you’re suddenly craving sour foods.

2. Oral bleeding.

Bleeding from the gums can be an indication that you’re just not taking care of your oral health all that well. If you floss after not flossing for a year, you might experience a small bit of bleeding. But bleeding gums can also be an indicator of a vitamin C deficiency. Before you reach for a supplement, consider getting it from natural sources, like fruits and vegetables.

3. Sleeplessness and cramping.

Everyone gets cramps and insomnia sometimes, but if it becomes a persisting issue, it could mean you’re having a little trouble with magnesium. Magnesium is an important nutrient for your brain, muscles, and heart health. If you’re experiencing this, visit a doctor and add foods like nuts, leafy greens, bananas, and fruits to your diet.