"Vitamins and nutrients are considered the new panaceas. But which ones really help you stay healthy and fit—and which are just quackery? Bestselling author Bas Kast has the answers." — STERN
"Anyone who wants to delve properly into this complex topic should get this book." — Für Sie 5/2026
"Interesting, varied, and thoroughly researched." — Spektrum der Wissenschaft online
"Bestselling author Bas Kast has analyzed the latest studies and reveals which pills and powders actually work." — LISA 10/2025
"The bestselling author explains the world of health boosters." — FOCUS 10/2026
50,000 copies sold
Everything you need to know about dietary supplements – the new comprehensive guide by bestselling author Bas Kast
The latest scientific studies suggest that even somewhat controversial dietary supplements can help people stay mentally and physically fit and live healthy and longer lives. In his new book, renowned bestselling author and science writer Bas Kast provides an in-depth overview of the current state of scientific knowledge on the benefits, risks, and side effects of supplements. He has evaluated many latest scientific studies and tried out many dietary supplements himself. Here he explains which supplements are beneficial for whom, which ones can protect against age-related conditions, and which nutrients are particularly important in certain stages of life. A fact-based compass that sheds light on the jungle of dietary supplements.
• The new guide from bestselling author and nutrition guru Bas Kast (more than 1.8 million copies of his books sold)
• From anti-aging to mental fitness, from pregnancy to menopause, for both men and women – which supplements work for whom, how, and when, and which ones do not