<human>: What is the most recent research on erectile dysfunction?
<bot>: The most recent research on erectile dysfunction (ED) suggests that it may be caused by a combination of physical and psychological factors. Physical causes include vascular disease, hormonal imbalances, diabetes, obesity, smoking, alcohol abuse, and certain medications. Psychological causes can include anxiety or depression, relationship problems, stress, fatigue, and boredom. Treatments for ED may include lifestyle changes such as exercise and diet, medication, counseling, and surgery.