Vitamin D dose size should increase with body weight (Cystic Fibrosis in this case) – Nov 2018

Vitamin D intake, serum 25-hydroxy vitamin D and pulmonary function in paediatric patients with cystic fibrosis: a longitudinal approach.

Br J Nutr. 2018 Nov 16:1-7. doi: 10.1017/S0007114518003021. [Epub ahead of print]

VitaminDWiki

1,200 IU of Vitamin D now recommended if you consume 3,000 calories daily (FDA) – 2018
- FDA appears seems to admit that amount of a nutrient should very with calories consumed

Overview Obesity and Vitamin D contains the following summary

FACT: People who are obese have less vitamin D in their blood
FACT: Obese need a higher dose of vitamin D to get to the same level of vit D
FACT: When obese people lose weight the vitamin D level in their blood increases
FACT: Adding Calcium, perhaps in the form of fortified milk, often reduces weight
FACT: 168 trials for vitamin D intervention of obesity as of Dec 2021
FACT: Less weight gain by senior women with > 30 ng of vitamin D
FACT: Dieters lost additional 5 lbs if vitamin D supplementation got them above 32 ng - RCT
FACT: Obese lost 3X more weight by adding $10 of Vitamin D
FACT: Those with darker skins were more likely to be obese Sept 2014
OBSERVATION: Low Vitamin D while pregnancy ==> more obese child and adult
OBSERVATION: Many mammals had evolved to add fat and vitamin D in the autumn
- and lose both in the Spring - unfortunately humans have forgotten to lose the fat in the Spring
SPECULATION: Low vitamin D might be one of the causes of obesity – several studies
SUGGESTION: Probably need more than 4,000 IU to lose weight if very low on vitamin D due to
risk factors such as overweight, age, dark skin, live far from equator,shut-in, etc.
Obesity category has 442 items

Normal weight Obese (50 ng = 125 nanomole)

Click here for 2014 study

Normal weight Obese (50 ng = 125 nanomole)

Cyctic Fibrosis category listing has 52 items along with related searches

Download the PDF from Sci-Hub via VitaminDWiki

Timmers NKLM1, Stellato RK2, van der Ent CK3, Houwen RHJ1, Woestenenk JW1.
1 1Department of Paediatric Gastroenterology,University Medical Centre Utrecht,KE.04.133.1,P.O. Box 85500,3508 GA Utrecht,The Netherlands.
2 Department of Biostatistics, Julius Centre,University Medical Centre Utrecht,STR.6.131,P.O. Box 85500,3508 GA Utrecht,The Netherlands.
3 Cystic Fibrosis Centre,University Medical Centre Utrecht,KH.01.419.0,P.O. Box 85500,3508 GA Utrecht,The Netherlands.

Pancreatic-insufficient children with cystic fibrosis (CF) receive age-group-specific vitamin D supplementation according to international CF nutritional guidelines.

The potential advantageous immunomodulatory effect of serum 25-hydroxy vitamin D (25(OH)D) on pulmonary function (PF) is yet to be established and is complicated by CF-related vitamin D malabsorption. We aimed to assess whether current recommendations are optimal for preventing deficiencies and whether higher serum 25(OH)D levels have long-term beneficial effects on PF. We examined the longitudinal relationship between vitamin D intake, serum 25(OH)D and PF in 190 CF children during a 4-year follow-up period. We found a significant relationship between total vitamin D intake and serum 25(OH)D (β = 0·02; 95 % CI 0·01, 0·03; P = 0·000). However, serum 25(OH)D decreased with increasing body weight (β = -0·79; 95 % CI -1·28, -0·29; P = 0·002). Furthermore, we observed a significant relationship between serum 25(OH)D and forced expiratory volume in 1 s (β = 0·056; 95 % CI 0·01, 0·102; P = 0·018) and forced vital capacity (β = 0·045; 95 % CI 0·008, 0·082; P = 0·017). In the present large study sample, vitamin D intake is associated with serum 25(OH)D levels, and adequate serum 25(OH)D levels may contribute to the preservation of PF in children with CF.

Furthermore, to maintain adequate levels of serum 25(OH)D, vitamin D supplementation should increase with increasing body weight. Adjustments of the international CF nutritional guidelines, in which vitamin D supplementation increases with increasing weight, should be considered.