Some people become vegan because they disagree with the treatment of animals in the modern animal farm industry. Other reasons to become vegan are for health, religious reasons, to protect the environment, or because of world hunger. Animals eat a lot and take up a lot of resources. By not producing meat, milk, or eggs, a lot of food, land (as of 2006, 30% of the earth's land mass is used raising animals for food) and water can be saved. For example, it takes about 16 pounds of grain to make 1 pound of grain-fed meat, so eating plants directly takes fewer resources. There is also the issue of antibiotic use in the industry. Animals are given antibiotics so often that the risk of bacteria becoming resistant to antibiotics is very possible in the near future.