Phyllis Light, the legendary master herbalist from Alabama, will be teaching a two-day workshop, Natural Approaches to Major Mental Health Issues, from 10 a.m. to 5 p.m., March 24, and 10 a.m. to 4:30 p.m., March 25, at Th e Boston School of Herbal Studies, in Arlington.

Anti-depressant usage among Americans has increased more than 400 percent over the past 10 years. With so many Americans using psychotropic medications, it is imperative for herbalists to have an understanding of mind/body disorders, including ADD/ADHD, bipolar disorder, autism, obsessive compulsive disorder and various forms of depression and anxiety.

In this class, Light will discuss how imbalances in methylation and neurotransmitter functioning as well as oxidative stress contribute to emotional and spiritual disease. She will also focus on herbal and nutritional protocols and lifestyle changes that can address these major disorders. She will describe how the liver, brain and nervous system work together to keep people healthy and balanced.

Cost: $250 ($150 non-refundable deposit). Location: 12 Pelham Terrace, Arlington. For more information, call 781-646-6319, email [email protected] or visit BostonHerbalStudies.com.