If you have thyroid problems, you might be taking a medication to help treat the symptoms. Most of the time, when doctors give their patients a thyroid hormone, they give levothyroxine or T4. If this is what you're taking, there's some new data that suggests that the routine use of T4 for thyroid hormone replacement might be putting you at an increased risk for cancer.


Do you have any pet peeves that really aggravate the heck out of you? I have to admit that I have several. But maybe the one that aggravates me the most has to do with the ignorance surrounding progesterone-positive breast cancers. Please pay attention to this information. It could very well save the lives of millions of women.

Welcome To Second Opinion

Second Opinion helps you go beyond "band-aid" solutions to get to the real cause of your health problems.

Editor-in-Chief Frank Shallenberger MD has been practicing medicine for over 42 years. He is licensed in both conventional and alternative medicine, and sees patients in his clinic on a daily basis.

He formed and serves as president of The American Academy of Ozonotherapy, the only professional academy dedicated to teaching ozone therapy in the United States. He is also the developer of Bio-Energy Testing and Prolozone therapy.

Dr. Shallenberger uses breakthrough cures you won't hear about from mainstream medicine or even other "alternative" or anti-aging doctors. You'll discover how to cure your arthritis, diabetes, allergies, fatigue, insomnia, fibromyalgia and a host of other illnesses.

Please explore our website. While you're here, be sure to sign up for Dr. Shallenberger's free Health Alert newsletter and get his latest Special Report:

The World's Most Effective Way to Melt Away Stress.


"You have helped me in getting my cholesterol under control and now my blood pressure is almost perfect.
All done naturally!" ”

Iris M., AZ

“Your newsletter is one of the best among many I have read. We have used a number of items to benefit our personal health care.”

Norman A., FL

Free Report Reveals
The World's Most Effective Way To Melt Away Stress

This free weekly email service brings you cutting-edge information and Dr. Shallenberger's latest advice about your most pressing health concerns.

When you sign up you'll gain instant access to Dr. Shallenberger's newest Special Report:

The World's Most Effective Way To Melt Away Stress.

Connect With Dr. Shallenberger

Connect with Dr. Shallenberger on the Advanced Bionutritionals Facebook Page for his latest advice on your most pressing health concerns, breakthrough developments in natural health, his favorite supplements, special offers, and more.

Dr. Shallenberger's Favorites
Find out about Dr. Shallenberger's favorite vitamins, minerals, and herbs
Doctor's Favorites

View Vitamins & Supplements

From Dr. Frank Shallenberger

“The best treatment for any disease is not to get it. All disease is preventable, so start now while you are healthy.”

"I look forward to the day when everyone that goes into a doctor’s office is healthy, and is only there to learn how to stay that way."