The concept of Developmental Origins of Health and Disease (DOHaD) suggests that environmental factors during early development, such as in the womb and early childhood, can significantly influence an individual's long-term health. Factors like nutrition, stress, and exposure to toxins can affect how genes are expressed, potentially leading to chronic conditions later in life, such as obesity, diabetes, and heart disease. Research in DOHaD emphasizes the importance of prenatal care and early childhood interventions to promote better health outcomes. By understanding how early experiences shape health, healthcare providers can develop strategies to prevent diseases and improve overall well-being throughout a person's life.