An information source is anything that information can come from, such as media, blogs, books, experts, and websites. The type of source needed depends on the question being asked. Health products are manufactured equipment or substances used to maintain health or treat diseases. Common health products include herbal supplements, cosmetics, medicine, and food. Health services provide medical care and health information to satisfy consumer needs and wants. Traditional medicine and medical services are important parts of health care systems for treating diseases and psychological issues. The primary roles of primary health care are to provide continuous comprehensive care to patients and connect them to social services.