1. Take a spoon and sweep it over the surface of the tongue.
2. Place the spoon in a transparent bag and place it in the light: sun or table lamp.
3. After a minute, check the spoon.
If there are no spots on it and there is no unpleasant odor from the bag then you do not have any health problems.
If you notice an unpleasant smell, it indicates:
Problems with the lungs or stomach – if the scent is sharp
Problems with diabetes – if the smell is sweet
Kidney problems – if the smell reminiscent of ammonia
If you notice any deposits, it indicates:
Irregular thyroid function – white or yellow
Bronchitis, poor circulation, high cholesterol – purple
Respiratory infection – white
Kidney problems – orange