Donating your body to medical science is a noble act, but can be complex if you have no legal relatives. While the Anatomy Act 1959 allows for unclaimed bodies to be used for research, it doesn't directly address individuals wishing to donate without family consent. Your best options involve consulting a lawyer to explore legal avenues, potentially through the High Court, or seeking assistance from NGOs specialising in body donation. Medical colleges can also provide specific information and declination reasons.