People can make Heart disease worser by drinking too much alcohol
yeah you need to inject otherwise it is contagious which can spread to humans in their home too or the disease can become worse.
it was worse in the Paleolithic time period.
Yes, illnesses become worse as time goes by.
For most healthy humans and animals, yes. For humans or animals with certain diseases, no.
The Diseases.
yes. Pathogens are diseases
Heck No. In fact, chemicals make land pollution much, much worse and can cause many diseases.
The planet is worse off with humans.
Food keeps humans alive and helps to make the body stronger against diseases. Without food humans starve to death.
Yes, humans can transmit diseases or infections to dogs, making them sick. It is important to practice good hygiene and take precautions to prevent the spread of illnesses between humans and animals.
Diseases passed to humans from animals are called zoonoses.
If you make it angry, yes. Otherwise no, though they tend to be shy and they may have diseases.