Article
Pediatrics
Chayatat Ruangkit, Sukrit Suwannachat, Pornchanok Wantanakorn, Napapailin Sethaphanich, Surapat Assawawiroonhakarn, Oraporn Dumrongwongsiri
Summary: Most exclusively breastfed Thai infants at 6 months old have serum vitamin D levels below sufficiency level. However, supplementing with vitamin D (400 IU/day) improves their vitamin D status and prevents deficiency.
Article
Nutrition & Dietetics
Tengfei Ma, Sihan Bu, Nigel Paneth, Jean M. Kerver, Sarah S. Comstock
Summary: Breastfeeding and introduction of solid food are two major factors that influence the composition of infant gut microbiota. This study found that exclusively breastfed infants have lower microbial diversity and different composition compared to non-breastfed infants. Additionally, infants who received vitamin D supplements while being breastfed also had different gut microbiota compared to non-supplemented infants.
Article
Biochemistry & Molecular Biology
Frank Z. Stanczyk, Intira Sriprasert, Rachel Danis, Raj Pandian, Harpreet Matharu, Nicole Bender, Melissa Natavio
Summary: This study compared the effects of two combined oral contraceptive formulations on 25(OH)D levels and VDBP levels, revealing different impacts. LNG may have a suppressive effect on VDBP. Further research is needed to understand the influence of hormonal contraceptive formulations on vitamin D status and women's health.
JOURNAL OF STEROID BIOCHEMISTRY AND MOLECULAR BIOLOGY
(2021)
Article
Geriatrics & Gerontology
Lisa Ceglia, Anastassios G. Pittas, Bess Dawson-Hughes
Summary: This study investigated the effect of 4000 IU/day of vitamin D-3 supplementation on blood fibroblast growth factor-23 (FGF23) levels. The results showed that vitamin D-3 supplementation did not significantly alter FGF23 levels in obese older adults.
AGING CLINICAL AND EXPERIMENTAL RESEARCH
(2023)
Article
Biochemistry & Molecular Biology
Shufei Zeng, Chang Chu, Cornelia Doebis, Volker von Baehr, Berthold Hocher
Summary: There is a strong positive linear correlation between free 25(OH)D (f25(OH)D) and total 25(OH)D, making them useful for assessing vitamin D levels. The recommended threshold level for f25(OH)D is 8.499 pg/mL, corresponding to a target concentration of at least 30 ng/mL for t25(OH)D. The upper limit for vitamin D is still unclear, with most experts favoring a upper limit of 100 ng/mL for t25(OH)D.
JOURNAL OF STEROID BIOCHEMISTRY AND MOLECULAR BIOLOGY
(2021)
Article
Multidisciplinary Sciences
Jeffrey R. Measelle, Dare A. Baldwin, Jelisa Gallant, Kathleen Chan, Tim J. Green, Frank T. Wieringa, Mam Borath, Sophonneary Prak, Daniela Hampel, Setareh Shahab-Ferdows, Lindsay H. Allen, Hou Kroeun, Kyly C. Whitfield
Summary: The study found that women relying on rice-based diets may have insufficient thiamine intake, putting breastfed infants at risk of thiamine deficiency. Investigating the impact of maternal thiamine supplementation doses, the research found that a high dose of thiamine benefited infants' language development significantly, but had generally no significant effects on motor or visual reception development.
ANNALS OF THE NEW YORK ACADEMY OF SCIENCES
(2021)
Article
Nutrition & Dietetics
Nathalie Gharibeh, Maryam Razaghi, Catherine A. Vanstone, ShuQin Wei, Dayre McNally, Frank Rauch, Glenville Jones, Martin Kaufmann, Hope A. Weiler
Summary: The study found that maternal gestational weight gain is related to neonatal bone mass, while maternal vitamin D status does not seem to have an impact.
Article
Nutrition & Dietetics
Guowei Li, Likang Li, Jonathan D. Adachi, Ruoting Wang, Zebing Ye, Xintong Liu, Lehana Thabane, Gregory Y. H. Lip
Summary: This study found a quasi J-shaped relationship between serum circulating 25-hydroxyvitamin D (25(OH)D) level and risk of recurrent stroke in patients with a stroke history. The lowest risk of recurrent stroke was observed at a 25(OH)D level of approximately 60 nmol/L, which was associated with a 48% reduction in risk compared to a level of 10 nmol/L.
Article
Nutrition & Dietetics
RuTong Wang, Weijing Wang, Ping Hu, Ronghui Zhang, Xue Dong, Dongfeng Zhang
Summary: This study aimed to evaluate the association between dietary vitamin D intake and serum vitamin D concentrations with cognitive performance in older Americans. The results showed a positive association between dietary vitamin D intake, serum total 25-hydroxyvitamin D, and cognitive performance, with no significant gender differences in the associations. Further research is needed to clarify the effects of dietary vitamin D intake and specific serum D concentrations on cognitive performance.
Review
Biochemistry & Molecular Biology
Nataliia Karpova, Olga Dmitrenko, Ekaterina Arshinova, Malik Nurbekov
Summary: 25-hydroxyvitamin D (25(OH)D) is essential during pregnancy and deficiency can increase the risk of preeclampsia. Current research on the effects of 25(OH)D deficiency and supplementation on pregnancy outcomes shows contradictory results.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Nutrition & Dietetics
Benjamin Levy, Karen M. O'Callaghan, Huma Qamar, Abdullah Al Mahmud, Alison D. Gernand, M. Munirul Islam, Daniel E. Roth
Summary: Variability in maternal and infant 25(OH)D levels following vitamin D supplementation is largely determined by supplemental vitamin D intake and initial 25(OH)D levels. Other characteristics contribute minimally to the variance. Maternal delivery 25(OH)D and prenatal vitamin D intake are the major determinants of neonatal 25(OH)D levels. The variance in later infancy 25(OH)D can only be partly explained by various biological, sociodemographic, and laboratory-related characteristics.
JOURNAL OF NUTRITION
(2021)
Article
Agriculture, Dairy & Animal Science
Miranda C. M. Dosi, Chris M. Riggs, Jessica May, Adele Lee, Eugenio Cillan-Garcia, Joe Pagan, Bruce C. McGorum
Summary: Hong Kong racehorses have low serum vitamin D-2 and total vitamin D concentrations and rely on D-3 supplementation to maintain adequate vitamin D status.
Article
Nutrition & Dietetics
Aislinn F. McCourt, Steven L. Mulrooney, Graham J. O'Neill, E. Dolores O'Riordan, Aifric M. O'Sullivan
Summary: Food fortification of vitamin D improves intake but is not mandatory in many countries. Combining vitamin D with different dietary lipids can affect absorption. This randomized trial investigated the effect of the lipid composition of a vitamin D-fortified dairy drink on 25-hydroxyvitamin D concentrations. The results showed that for individuals classified as vitamin D-insufficient, all forms of vitamin D supplementation increased concentrations significantly. However, for vitamin D-sufficient participants, only the coconut oil dairy drink and supplement had significant increases. There was no effect on metabolic health biomarkers.
BRITISH JOURNAL OF NUTRITION
(2023)
Article
Oncology
Sha Sha, Li-Ju Chen, Hermann Brenner, Ben Schoettker
Summary: The associations of serum 25(OH)D levels and vitamin D supplementation with total and site-specific cancer mortality were investigated. Vitamin D deficiency and insufficiency were found to be associated with increased mortality from multiple common cancers.
EUROPEAN JOURNAL OF CANCER
(2023)
Article
Medicine, General & Internal
Li-liangzi Guo, Si-si Chen, Li-xian Zhong, Kai-yin He, Yu-ting Li, Wei-wei Chen, Qiu-ting Zeng, Shao-hui Tang
Summary: The consumption of vitamin D and the circulating level of 25(OH)D are associated with a decreased risk of CRC precursors. However, they do not significantly affect the risk of recurrence of CRC precursors.
FRONTIERS IN MEDICINE
(2022)