Twin Valley Holistic Health and Wellness will present Self-Heal With Barbara O’Neill, a five-day immersive health program from October 14 to 18, 2025 at Lancaster Mennonite School. Globally respected for her no-nonsense, natural healing approach, O’Neill returns to the U.S. to teach practical strategies for restoring health through lifestyle, nutrition, detoxification and natural remedies.

Each day will focus on essential body systems and conditions—from gut and liver health to hormones, thyroid, bone strength and chronic illness. O’Neill will also cover emotional well-being, dental care and natural pain management. Guest speakers include Dr. Todd Frisch, author of WTF? Why the Face, and holistic health educator Jacqueline Bourne, of OK B Healthy.

The Saturday vendor market, open to the public from 8 a.m. to 3 p.m. October 18, 2025, will feature natural products, wellness services and local vendors.