Aging is a multifactorial process leading to general deterioration in many tissues and organs, accompanied by an increased incidence and severity of a wide variety of chronic, incurable, and often fatal diseases. A possibility of slowing down the aging process and improving the quality of life in old age by nutritional intervention has renewed the interest of the scientific world in anti-aging therapies. These include potential dietary interventions, adherence to nutrition, hormonal and cell-based therapies, genetic manipulations, and anti-aging supplements or nutrients. This review addresses strategies to slow the aging process by caloric restriction and the use of nutritional supplements.

Cancer therapy has evolved in recent times on diagnostic and therapeutic grounds. Nanotechnology is the latest technique used to design nanoparticles having therapeutic applications in diseases like cancer. There are various such nanoparticles types made up of gold, silver, iron, and other compounds. Much recent are the bioinspired and theragnostic nanoparticles which exhibit good biocompatibility and much more effective drug delivery compared to the traditional drug delivery mechanisms. Bioimaging is a visualization process that aids to locate the target cancer cell or tumor-targeted delivered nanoparticles to understand and study the actual status of the disease conditions. In this review, we have discussed these various nanomaterials and its counterparts having applications in cancer.

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