Revised to include recent research, this study focuses on the plant evening primrose which is seen to be beneficial for many ailments, ranging from pre-menstrual syndrome to multiple sclerosis. Especially useful in countering the symptoms of PMT (which affects over 90% of the female population) and arthritis, it is also very successful in treating skin problems and enhancing overall skin tone and hair and nail health. This book details the many benefits of evening primrose oil and provides an easy-to-use diet plan and dosage chart. Case histories are used throughout, with answers to the most frequently asked questions.