Cancer patients need more vitamin D, even those who are supplementing – observational study

Cross-sectional observational study - Investigation of vitamin D concentration in Caucasian cancer patients. what is the adequate dose of vitamin D for these patients?

Clin Nutr. 2021 Apr 22;40(6):3852-3858. https://doi.org/10.1016/j.clnu.2021.04.026

Aleksandra Kapała 1, Małgorzata Szlendak 2, Ewelina Grochowska 3

* Improved long-term chemo survival if good Vitamin D (1.8 X better - Hodgkin Lymphoma) – Oct 2019* Chemotherapy might be augmented with Vitamin D – Jan 2017* Metastatic Cancer probably reduced by vitamin D - many studies* Cancer patients at high risk of vitamin D deficiency were not tested as often (paradoxically) – July 2014* Cancer - after diagnosis pages containing RADIATION in Vitamin D Life title (7 as of Oct 2021)Many people would not have gotten cancer if they had taken enough Vitamin D years earlier* Vitamin D prevents and treats cancer in many ways – May 2021* Vitamin D prevents breast cancer, reduces BC mortality, and reduces BC chemotherapy problems – Sept 2018image* click on chart for detailsThis study ignored those with dark skins - who often have bigger problems with Cancer* Deaths after Cancer Surgery higher in blacks (probably low vitamin D) – Dec 2020* Blacks are more obese, have lower Vitamin D, and have more Cancer etc. than whites – Feb 2018* Prostate Cancer risk in black men increased 2X having poor Vitamin D Binding Protein – July 2017* Head and Neck Cancer associated with low vitamin D, especially with blacks - April 2012* Overview Dark Skin and Vitamin D has* The health disparity for dark skinned people is almost the same as whites having a low level of vitamin D | | | || --- | --- | --- || | Black
vs White | White - low D
vs White - high D || breast cancer | 1.34 | 1.26 || colorectal cancer | 1.43 | 1.44 || cardiovascular disease | 1.29 | 1.27 || all-cause mortality | 1.26 | 1.26 |Many doctors prescribe enough vitamin d for healthy people - post-surgery and chemo patients need much more * Surgeries often deplete Vitamin D - 300,000 IU resulted in little response – Nov 2018Vitamin D even helps after the doctor has given up* Palliative cancer benefit of 4,000 IU of Vitamin D – less opioids, infection, and CRP – Aug 2017Should consider prehabilitation - take Vitamin D BEFORE surgery* Taking Vitamin D just before and after surgery helps (open-heart in this case) – RCT Feb 2021Loading doses of Vitamin D are sometimes used before/after surgeries* 29 studies as of June 2021Cancer category starts with the following{include}--- * Omega-3,  MagnesiumZinc,  Quercetin,  non-daily Vit D,  Curcumin, intense exercise,   Ginger,   Essential oils, etc**  Note: The founder of Vitamin D Life uses 10 of the 12 known VDR activators--- 1. Vitamin D levels drop a lot for a few months following any surgeryVitamin D measured before surgery is not a good indicator of how much vitamin d is needed 1. Vitamin D levels should be > 40 ng or higher at all times* Is 50 ng of vitamin D too high, just right, or not enough

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2 charts from Google images

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Background & aims: Vitamin D impairs tumour-related transformation and supports the anticancer function of the immune system. Currently, there are no guidelines on vitamin D supplementation devoted solely to cancer patients. The primary objective of the study was to evaluate the frequency of vitamin D deficiency in Caucasian cancer patients and to characterize the clinical factors that predispose individuals to decreased vitamin D concentration. Secondly, the study aimed to estimate the dose of vitamin D supplementation that would prevent deficiencies in patients with cancer.

Methods: In the presented cross-sectional study the population consisted of 500 consecutive Caucasian patients with a diagnosis of neoplastic disease, some of which declared long-term vitamin D supplementation in various doses. Serum vitamin D concentration was measured once in all patients and clinical data were obtained from the hospital database. The frequencies of vitamin D deficiency were compared to certain clinical variables by appropriate statistical tests. The dose of vitamin D substitution in cancer patients was estimated using the receiver operating characteristic (ROC) curve.

Results: Vitamin D deficiency was diagnosed in 66.8% of patients with cancer and even in 31.6% who declared vitamin D supplementation. Older age, male gender, diagnosis of head and neck cancer or squamous cell carcinoma and body mass loss were identified as factors that predispose to vitamin D deficiency. The dose of vitamin D that would prevent deficiency in Caucasian patients with cancer was set at 2250 IU daily.

Conclusions: Vitamin D deficiency was very common in Caucasian patients with cancer, even in terms of vitamin D supplementation. The greatest predisposition was related to elder age, male gender, diagnosis of head and neck or squamous cell carcinoma and body mass loss. The dose of vitamin D supplementation in cancer patients should probably be higher than in the general population.

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