Health Nutrition Research
Brandon Luu, MD
Brandon Luu, MD

@BrandonLuuMD

13 tweets 11 reads Feb 07, 2025
X
Correcting severe symptomatic Vitamin D deficiency improves mitochondrial function by ~19%.
Here’s what the research shows 🧵👇1/13
Correcting severe symptomatic Vitamin D deficiency improves mitochondrial function by ~19%. Here’s...
Vitamin D deficiency is very common. When levels are low, people may feel muscle weakness and chronic fatigue. This study showed improvements in mitochondrial function after supplementation, suggesting this may be a mechanism for many of the negative side effects. /2
Vitamin D deficiency is very common. When levels are low, people may feel muscle weakness and chroni...
Study Design
12 adults with severe Vitamin D deficiency (25OHD <15 nmol/L).
31P-MRS scans to measure muscle energy production pre- and post-supplementation.
High-dose cholecalciferol: 20,000 IU every other day for ~10–12 weeks (don't take this much unless suggested by a doctor). /3
Study Design 12 adults with severe Vitamin D deficiency (25OHD
What is 31P-MRS
Uses MRI technology to track phosphocreatine (PCr), a molecule crucial for rapid ATP generation
Monitors how fast PCr recovers after exercise
Shorter recovery time = more efficient mitochondria /4
What is 31P-MRS Uses MRI technology to track phosphocreatine (PCr), a molecule crucial for rapid ATP...
Key Findings
Vitamin D levels improved from ~9 nmol/L to ~114 nmol/L
PCr recovery time dropped from ~34s to ~28s—about a 19% improvement in muscle oxidative capacity
Fatigue levels significantly decreased in all participants /5
Key Findings Vitamin D levels improved from ~9 nmol/L to ~114 nmol/L PCr recovery time dropped from...
Why this Study Matters
Vitamin D isn’t just about “bone health.” The study suggests a direct link between Vitamin D and mitochondrial performance in skeletal muscle. As such, repleting Vitamin D deficiency can help your muscles work faster and recover more efficiently. /6
Why this Study Matters Vitamin D isn’t just about “bone health.” The study suggests a direct link be...
The mechanism of this is unclear, but vitamin D may help:
1⃣Regulate calcium influx in muscle cells, powering ATP production
2⃣Influence key enzymes in mitochondria
3⃣Improve overall energy metabolism, translating to less fatigue /7
The mechanism of this is unclear, but vitamin D may help: 1⃣Regulate calcium influx in muscle cells,...
Implications:
This study helps reinforce the importance of measuring vitamin D levels in chronic fatigue. Vitamin D deficiency is quite common, especially in Canada and Europe and is easily treatable /8
Practical Tips
Aim for moderate sun exposure with appropriate protection (depends on location and skin type).
Discuss the right supplementation dose with a health professional.
Combine Vitamin D with a balanced diet. /9
Traditionally, Vitamin D is linked to bone mineral density. This study adds to mounting evidence that it’s also vital for muscular and metabolic health, acting directly on the mitochondria. More research is required, but the results are highly intriguing. /10
Limitations
Only 12 participants. No placebo group, and no clear metric of fatigue, so this is quite open to bias.
Intervention lasted ~10–12 weeks (we need longer studies for full clarity). Focused on severe deficiency; mild or moderate deficiency might show smaller or no effects /11
In summary, correcting severe Vitamin D deficiency can significantly improve muscle mitochondrial function, reducing fatigue and enhancing strength. Given how preventable and treatable this is, better screening and treatment could have a meaningful impact on muscle health and overall well-being. /12
In summary, correcting severe Vitamin D deficiency can significantly improve muscle mitochondrial fu...
Sources:
pubmed.ncbi.nlm.nih.gov
frontiersin.org
Improving the vitamin D status of vitamin D deficient adults is associated with improved mitochondrial oxidative function in skeletal muscle - PubMed
pubmed.ncbi.nlm.nih.gov/23393184/

Improving the vitamin D status of vitamin D deficient adults is associated with improved mitochondrial oxidative function in skeletal muscle - PubMed

Cholecalciferol therapy augments muscle mitochondrial maximal oxidative phosphorylation after exerci...
www.frontiersin.org

Loading page details...

Categories

Health Nutrition Research

Some tweets missing

Telegram Bot
Unroll threads via Telegram! Send any X link to our bot.
@rattibha_bot

Report this thread