Klaus Pietrzik
Endenicher Allee 19B
Bonn, NW 53115, Germany
Bonn, NW 53115, Germany
Last Updated: 09/26/2026
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Found 17 publications
A Framework to Guide Defining an Upper Threshold of Crystalline Vitamin B12 in Foods and Food Supplements.
Journal: Current nutrition reports
Published: January 28, 2025
Folate, Choline, and Vitamin B12 Supplementation for Pre-Conceptional and Pregnant Women
Journal: Therapeutische Umschau. Revue therapeutique
Published: November 23, 2022
Health Risk, Functional Markers and Cognitive Status in Institutionalized Older Adults: A Longitudinal Study.
Journal: International journal of environmental research and public health
Published: September 22, 2020
Pharmacokinetics of Sodium and Calcium Salts of (6S)-5-Methyltetrahydrofolic Acid Compared to Folic Acid and Indirect Comparison of the Two Salts.
Journal: Nutrients
Published: September 14, 2020
Folate supplementation for prevention of congenital heart defects and low birth weight: an update.
Journal: Cardiovascular diagnosis and therapy
Published: November 19, 2019
Dietary and lifestyle predictors of folate insufficiency in non-supplemented German women.
Journal: International journal of food sciences and nutrition
Published: September 08, 2018
Smoking, B Vitamins, and Lung Cancer: The Chicken or the Egg Causality Dilemma.
Journal: Journal of clinical oncology : official journal of the American Society of Clinical Oncology
Published: December 29, 2017
Response of Red Blood Cell Folate to Supplementation in Nonpregnant Women is Predictable: A Proposal for Personalized Supplementation.
Journal: Molecular nutrition & food research
Published: June 20, 2017
The effectiveness of daily supplementation with 400 or 800 µg/day folate in reaching protective red blood folate concentrations in non-pregnant women: a randomized trial.
Journal: European journal of nutrition
Published: November 30, 2016
Re: Alison J. Price, Ruth C. Travis, Paul N. Appleby, et al. Circulating Folate and Vitamin B12 and Risk of Prostate Cancer: A Collaborative Analysis of Individual Participant Data from Six Cohorts Including 6875 Cases and 8104 Controls. Eur Urol. In press. http://dx.doi.org/10.1016/j.eururo.2016.03.029: Serum Concentrations of Folate and Vitamin B12 and the Risk of Prostate Cancer According to Pooled Data: The Devil Is in the Detail.
Journal: European urology
Published: April 22, 2016
Preventable spina bifida and anencephaly in Europe.
Journal: Birth defects research. Part A, Clinical and molecular teratology
Published: March 31, 2015
Folate status and health: challenges and opportunities.
Journal: Journal of perinatal medicine
Published: November 12, 2014
Last Updated: 09/26/2026