Nature Deficit Disorder is a term coined by author Richard Louv in his book "Last Child in the Woods." It describes the phenomenon where individuals, particularly children, spend less time outdoors and in natural environments. This lack of connection to nature can lead to various physical and mental health issues, including increased stress, anxiety, and attention problems. The concept highlights the importance of outdoor experiences for overall well-being. Engaging with nature can improve mood, enhance creativity, and promote physical activity. Encouraging time spent in natural settings can help counteract the effects of this disorder and foster a healthier lifestyle.