What is food adulteration? What are the harms of food adulteration?

Many sellers often mix some unwanted substances to food to earn a heavy profit. Deliberate addition of any unwanted substance to food is called food adulteration.
Following are the harms of food adulteration:
Unhealthy practice of business.
Consumer is cheated.
Results in wastage of money.
May alter the taste of food.
Can lead to high concentration of harmful substances in the body.
Can cause many diseases.
Can cause food poisoning.
Can cause cancer.