by Angelina Lamberti  , Sinan Haddad  , Stefan Wagenpfeil  , Thomas Vogt  and Jörg Reichrath

Received: 13 September 2024;  Published: 29 October 2025;  doi: 10.21926/rpn.2504024

Recommendations for vitamin D supplementation are essential for the prevention and therapy of vitamin D deficiency. However, reliable data remain lacking for children, as most intake recommendations are based on individual studies. This work aimed to obtain reliable data that allow health authorities to re-evaluate recommendations for oral vitamin D uptake in children. We conducted a systematic literature search in MEDLINE/PubMed on vitamin D supplementation in children. All randomized controlle [...]

by Rolf Teschke  , Nguyen Xuan Chien  and Tran Dang Xuan

Received: 10 June 2025;  Published: 21 October 2025;  doi: 10.21926/rpn.2504023

Heavy metals are integral parts of our environment, originating initially from the universe and used in the industry, which may contribute to pollution. This book chapter aims to address the impact of heavy metals on the ecosystem and human health. Among the 32 heavy metals, eight belong to the group of essential ones: cobalt, copper, iron, manganese, molybdenum, nickel, selenium, and zinc. They were necessary in physiological amounts for the evolution of flora and fauna, including humans on ear [...]

by Recent Progress in Nutrition Editorial Office

Received: 28 August 2025;  Published: 09 October 2025;  doi: 10.21926/rpn.2504022