Paraquat, a herbicide banned in 74 countries, faces rising scrutiny in Australia after reports connected it to incurable illnesses. The chemical remains in use despite international limits. India recently introduced a nationwide prohibition. Studies show exposure to the chemical may increase Parkinson’s disease risks. Australian farmers are seeking safer substitutes as international bans expand. The controversies follow calls for tighter domestic regulations. Health groups press for stricter controls amid fears of long-term harm. Paraquat’s ongoing use here contrasts with its worldwide withdrawal. Debate intensifies over its safety.