Dr. Adiel Tel-Oren, a holistic scientist who educates medical professionals and the public about functional medicine and disease prevention, will speak on the Keys to Anti-aging Medicine on Saturday, April 18, at First Parish, in Waltham. The talk begins at 7:30 p.m. and includes a 6 p.m. vegan potluck dinner with the contribution of a dish.

The lecture will encompass a variety of skin issues and concerns, as Tel-Oren explains the latest scientific procedures associated with longevity and disease prevention. He will also discuss blemish solutions, therapies for the skin, brain and body, and non-invasive, cuttingedge diagnostic tools to greatly improve overall health.

Tel-Oren is a licensed European medical doctor, nutritionist and board-certified by the American Board of Functional Medicine, and Boards of Oxidative Medicine and Chelation Therapy. He is the founder of several holistic nonprofits in the United States, Asia, Africa and Europe.

Cost: $15 at the door, $10 in advance at DoctorTEvents.com. Location: Whitmore Hall, First Parish, 50 Church St., Waltham. For more information, call 781-899-6664 or visit DoctorTEvents.com.