How many chemicals are present in tobacco smoke in Canada and what are their health effects, summarized ?

Tobacco smoke contains over 7,000 chemicals, and many of these chemicals are toxic and harmful to human health. In Canada, tobacco smoke has been identified as a major contributor to indoor air pollution, and as a result, it has been linked to a wide range of health problems.

Some of the most harmful chemicals found in tobacco smoke include:

1. Carbon monoxide: This is a colorless and odorless gas that reduces the amount of oxygen in the body, causing serious health problems.

2. Tar: This is a sticky substance that coats the lungs and increases the risk of lung cancer and other respiratory diseases.

3. Formaldehyde: This is a carcinogenic chemical that can cause cancer, as well as eye, nose, and throat irritation.

4. Benzene: This is a carcinogenic chemical that is also linked to leukemia and other blood disorders.

5. Acetone: This is a highly flammable solvent that can cause headaches, dizziness, and nausea.

6. Lead: This is a toxic metal that can cause serious health problems, including brain damage and reduced IQ in children.

7. Cadmium: This is a toxic metal that can cause kidney damage and increase the risk of cancer.

8. Arsenic: This is a toxic chemical that can cause skin, lung, and bladder cancer, as well as heart disease.

Overall, exposure to tobacco smoke can lead to serious health problems, including cancer, heart disease, respiratory illness, and more. It's important to avoid exposure to tobacco smoke and to promote smoke-free environments in order to protect public health.