Second Opinion: health alert; alternative medicine; electronic letter; Dr. Frank Shallenberger; SecondOpinionNewsletter.com

Are “Normal” Vitamin D Levels Good Enough to Prevent Cancer?

Published September 21, 2026

Many doctors still ignore the strong data on cancer prevention and vitamin D (25-hydroxy vitamin D) levels.

Published September 14, 2026

Michelle came to see me a few years ago. She was 67 years old

Published September 8, 2026

Wouldn’t it be great if we could just scan the body every now and then to find cancers before they spread all over?

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Are “Normal” Vitamin D Levels Good Enough to Prevent Cancer?

Simple Cure for Skin Cancer

This Common Food Makes Cancer Light Up on an MRI

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It's Advanced Bionutritional's Christmas In July! Take $25 Off Qualified Purchases(Plus Free Shipping!)

Are “Normal” Vitamin D Levels Good Enough to Prevent Cancer?

Simple Cure for Skin Cancer

This Common Food Makes Cancer Light Up on an MRI

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

Get A Free Copy Of This Powerful Report

Inside You'll Discover

It's Advanced Bionutritional's Christmas In July! Take $25 Off Qualified Purchases
(Plus Free Shipping!)