1. Resistance to Change: Individuals may be resistant to altering long-standing habits and routines. 2. Misinformation: The spread of false information can undermine public health efforts and create confusion. 3. Resource Limitations: Limited access to healthcare, education, and healthy options can hinder behavior change, particularly in low-income communities. 4. Behavioral Relapse: Individuals may revert to old behaviors, especially if ongoing support is lacking. 5. Complexity of Behavior: Health behaviors are often influenced by multiple, interrelated factors, making targeted interventions complex.