The study, published in the Journal of Neuroscience, found that when microglia, the brain’s resident immune cells, were blocked, female response to opioid pain medication improved and matched the levels of pain relief normally seen in males.

Women suffer from a higher incidence of chronic and inflammatory pain conditions such as fibromyalgia and osteoarthritis. While morphine continues to be one of the primary drugs used for the treatment of severe or chronic pain, it is often less effective in females.

Read more at Georgia State University