After working for Chevron Lubricants for 33 years as a laboratory chemist, Tom Bell was happy to retire in early 2015. His plan was to enjoy his home in the San Francisco Bay Area—camping, fishing, relaxing and spending time with his wife, Connie. But his retirement bliss was cut short a few months later, when Tom began to experience some troublesome symptoms.
It began with fatigue, blurry vision and insomnia, and his primary care physician treated him for depression and insomnia. Then