Diet culture, valuing thinness and appearance, impacts our perceptions of beauty and self-worth. This system has deep historical roots, with changing beauty standards and modern complexities. It promotes quick fixes and narrow beauty ideals, leading to negative psychological and health effects, particularly in women and younger generations. Counter movements like body positivity and holistic health approaches challenge diet culture, promoting diversity and balanced eating. Healthcare professionals play a crucial role in guiding patients away from harmful dieting trends and towards evidence-based, sustainable health practices.