This research examined the medicinal properties of Isaria tenuipes, a fungus found in the Darjeeling Himalaya region. The study found that extracts from this fungus have strong antioxidant properties and can kill cancer cells. This has important implications for everyday life: • Could lead to new natural antioxidant supplements to help prevent oxidative stress-related diseases • May contribute to development of new cancer treatments with fewer side effects than current options • Demonstrates the value of preserving biodiversity in the Himalayan region as a source of medicinal compounds • Shows potential for sustainable production of natural medicines through fungal cultivation • Validates traditional Asian medicine practices that have used this fungus as a health supplement