What is a Weighted Blanket for Anxiety and can it help adults and children with anxiety disorders? Many studies have shown that the sensation of weight can have a calming and comforting effect, providing a grounding sensation to help alleviate symptoms of anxiety and bring a good night's sleep to people suffering from anxiety disorders. Serotonin and cortisol levels in the brain can be depleted for a variety of reasons, which can cause anxiety and insomnia; using a heavy blanket or weighted blanket for anxiety can help you fall asleep, promote better mental health, and relieve stress due to lack of sleep.