Weighted blankets have been around for many years in the special needs community and I first was introduced to them in 2000 by my son’s occupational therapist. Historically they have been used as assistive devices for persons with sensory, sleep and mood disorders. Most commonly known is in use to help persons living with Autism, ADHD, insomnia and anxiety.
With the recent surge in popularity, they have become more main stream helping thousands of people living with conditions.
HOW DO THEY WORK?
Weighted Blankets provide Deep Pressure Therapy (DPT) touch creating a sensation similar to receiving a hug. Deep pressure touch releases serotonin, also known as the happy feel good hormone, in the brain resulting in feelings of calm, relaxation, comfort and joy. This helps reduce anxiety and stress. With increased levels of serotonin, melatonin is released improving sleep quality. 
WHO CAN USE WEIGHTED BLANKETS?
With their increase in popularity, people from all demographics are finding comfort and benefits from using weighted blankets. Research studies have shown benefits for people living with sensory issues, traumatic brain injury, chronic pain, mental illness, insomnia, restless legs, PTSD and more
Exceptional Parent, Nov2015; 45(11): 10-10. 1/2p. (Article – brief item, pictorial)
.Eileen Parker, Cara Koscinski. The Weighted Blanket Guide: Everything You Need to Know about Weighted