Abstract

It is a matter of great concern that people do not understand the significance of trees and their benefits. Society must be aware
of the importance of trees and their role in human life, wildlife, and the side effects of a lack of trees. It is the reason for today’s
increasing air pollution because the decrease in the number of trees and lack of trees results in deterioration of the balance of
nature. All environmental changes cause several diseases such as stroke, heart disease, chronic obstructive pulmonary disease,
respiratory infections, and lung cancer. The medicine we have used has some drawbacks so need to use natural herbs to cure
disorders. These natural herbs have magical effects to cure diseases. At the same time, nanoparticles (NPs) have been synthesized
using various plant extracts either obtained from leaves, roots, seeds, etc. Plant extract-based NPs are in great trend due to their
superior properties and wide range of applicability. This review paper provides a brief knowledge about medicinal plants, Indian
medicinal plants used as home remedies, plant extract-based NPs, and their applications as antiviral, anticancer, antibacterial,
and antifungal treatment.