Ayurveda has long been the main system of health care in India, although conventional (Western) medicine is becoming more widespread there, especially in urban areas. About 70 percent of India’s population lives in rural areas; about two-thirds of rural people still use Ayurveda and medicinal plants to meet their primary health care needs. In addition, most major cities have an Ayurvedic college and hospital. Ayurveda and variations of it have also been practiced for centuries in Pakistan, Nepal, Bangladesh, Sri Lanka, and Tibet. The professional practice of Ayurveda in the United States began to grow and became more visible in the late 20th century.
Health officials in India and other countries have expressed concerns about certain Ayurvedic practices, especially those involving herbs, metals, minerals, or other materials. Here are some of the
1. Ayurvedic medications have the potential to be toxic. Many materials used in them have not been thoroughly studied in either Western or Indian research.
2. Most Ayurvedic medications consist of combinations of herbs and other medicines, so it can be challenging to know which ones are having an effect and why.
3. Whenever two or more medications are used, there is the potential for them to interact with each other. As a result, the effectiveness of at least one may increase or decrease in the body. For example, it is known that guggul lipid (an extract of guggul) may increase the activity of aspirin, which could lead to bleeding problems.
4. Most clinical trials of Ayurvedic approaches have been small, had problems with research designs, lacked appropriate control groups, or had other issues that affected how meaningful the results were
If Ayurveda was bad for peoples health I don't think you would have over 1 Billion Indians today, Indian and China have a rich history of herbal medication that started long before Western History.