Vitamin D Research Studies - Scientific Evidence

randomized-controlled-trial 2023

Vitamin D for Severe COVID-19: Does it Help?

Quick Summary: A recent study looked at whether giving vitamin D to severely ill COVID-19 patients in the ICU helped them recover. The study...

PMID: 36904232

Read Analysis

Original Study

randomized-controlled-trial 2011

Vitamin D Boosts Testosterone in Men: Key Study

Quick Summary: A 2011 study tested if vitamin D supplements could raise testosterone levels in overweight men who were low on vitamin D. Men...

PMID: 21154195

Read Analysis

Original Study

clinical-trial 2019

Vitamin D for Depression: Does It Help Seniors?

Quick Summary: A study found that taking a high dose of vitamin D weekly helped reduce symptoms of depression in older adults. This suggests...

PMID: 30316534

Read Analysis

Original Study

randomized-controlled-trial 2022

Vitamin D and Exercise for Knee OA: Key Study Insights

Quick Summary: This study looked at whether intense strength training works better than gentle training for people with knee...

PMID: 35331018

Read Analysis

Original Study

observational-study 2021

Vitamin D and Hair Loss: What's the Connection?

Quick Summary: Research suggests a link between low vitamin D levels and hair loss. This review looked at existing studies and found that...

PMID: 34553483

Read Analysis

Original Study

randomized-controlled-trial 2023

Vitamin D and Heart Health: Key Trial Findings

Quick Summary: A large Australian study tested if monthly vitamin D supplements could lower the risk of major heart problems like heart...

PMID: 37380191

Read Analysis

Original Study

meta-analysis 2005

Vitamin D Prevents Fractures: Meta-Analysis Evidence

Quick Summary: A large study showed that taking a higher dose of vitamin D (700-800 IU daily) can significantly reduce the risk of bone...

PMID: 15886381

Read Analysis

Original Study

meta-analysis 2023

Vitamin D and Psoriasis: What's the Connection?

Quick Summary: Research shows people with psoriasis often have low vitamin D levels. Taking vitamin D supplements might help improve...

PMID: 37571324

Read Analysis

Original Study

meta-analysis 2020

Vitamin D and Gum Disease: What You Need to Know

Quick Summary: Research shows people with gum disease (periodontitis) often have lower levels of vitamin D in their blood. This study...

PMID: 32708032

Read Analysis

Original Study

meta-analysis 2020

Vitamin D and Fertility: What You Need to Know

Quick Summary: Research suggests that vitamin D might affect a key fertility hormone, AMH, especially in women with PCOS. This study found...

PMID: 32481491

Read Analysis

Original Study

meta-analysis 2019

Vitamin D + Calcium Fracture Prevention Study Results

Quick Summary: A large study looked at whether taking vitamin D and calcium helps prevent broken bones. The results showed that these...

PMID: 31860103

Read Analysis

Original Study

meta-analysis 2020

Vitamin D Lowers Preeclampsia Risk in Pregnancy - Study

Quick Summary: A review of multiple studies shows that taking vitamin D supplements during pregnancy may significantly lower the...

PMID: 31526611

Read Analysis

Original Study

systematic-review 2024

Vitamin D and COVID-19: Does It Help?

Quick Summary: A review of studies found that regular Vitamin D use might lower the risk of death from COVID-19. However, the research showed mixed...

PMID: 38732592

Read Analysis

Original Study

meta-analysis 2019

Vitamin D: Does It Help You Live Longer?

Quick Summary: A large study looked at whether taking vitamin D supplements helps people live longer. The research found that vitamin D might...

PMID: 31405892

Read Analysis

Original Study

meta-analysis 2014

Vitamin D for Bones: Does It Really Help?

Quick Summary: A study looked at whether taking vitamin D supplements helps improve bone density. The results showed that, in general, vitamin D...

PMID: 24119980

Read Analysis

Original Study

meta-analysis 2020

Vitamin D in Pregnancy: Boost Baby's Health & Reduce Risks

Quick Summary: New research shows that taking vitamin D supplements during pregnancy can significantly improve both mom and...

PMID: 31669079

Read Analysis

Original Study

meta-analysis 2012

Vitamin D3 vs. D2: Which Is Best?

Quick Summary: Research shows that vitamin D3 is more effective than vitamin D2 at raising your vitamin D levels. This means your body uses D3 better than...

PMID: 22552031

Read Analysis

Original Study

meta-analysis 2019

Vitamin D for Colds & Flu: Does It Really Help?

Quick Summary: A large study found that taking vitamin D supplements can lower your risk of catching a cold or the flu. The biggest benefit...

PMID: 30675873

Read Analysis

Original Study

meta-analysis 2016

Vitamin D & Calcium: Can They Prevent Broken Bones?

Quick Summary: Research shows that taking calcium and vitamin D together may lower your risk of breaking a bone, especially a hip. This...

PMID: 26510847

Read Analysis

Original Study

systematic-review 2017

Vitamin D for Muscle Strength: Does it Work?

Quick Summary: Research suggests that taking vitamin D3 supplements can boost muscle strength in athletes. This review of several studies found...

PMID: 27379960

Read Analysis

Original Study

study 2025

Vitamin D for Back Pain: Does It Help?

Quick Summary: Research shows that taking vitamin D can improve muscle strength, physical function, and overall quality of life for people with back...

PMID: 40761159

Read Analysis

Original Study

review 2025

Vitamin D & Early Menopause: What's the Link?

Quick Summary: Research suggests a link between low vitamin D levels and premature ovarian insufficiency (POI), a condition that can lead to...

PMID: 40746914

Read Analysis

Original Study

review 2025

Vitamin D for Hives? Research Says Yes!

Quick Summary: Research suggests that taking vitamin D supplements might help reduce the severity of chronic hives (urticaria), especially in people...

PMID: 40745339

Read Analysis

Original Study

study 2025

Vitamin D Boosts Exercise Benefits for Women

Quick Summary: A new study found that taking Vitamin D while doing water aerobics helped overweight and obese menopausal women get more...

PMID: 40735907

Read Analysis

Original Study

Vitamin D Research

Study Types

Related Body Systems

Vitamin D for Severe COVID-19: Does it Help?

Vitamin D Boosts Testosterone in Men: Key Study

Vitamin D for Depression: Does It Help Seniors?

Vitamin D and Exercise for Knee OA: Key Study Insights

Vitamin D and Hair Loss: What's the Connection?

Vitamin D and Heart Health: Key Trial Findings

Vitamin D Prevents Fractures: Meta-Analysis Evidence

Vitamin D and Psoriasis: What's the Connection?

Vitamin D and Gum Disease: What You Need to Know

Vitamin D and Fertility: What You Need to Know

Vitamin D + Calcium Fracture Prevention Study Results

Vitamin D Lowers Preeclampsia Risk in Pregnancy - Study

Vitamin D and COVID-19: Does It Help?

Vitamin D: Does It Help You Live Longer?

Vitamin D for Bones: Does It Really Help?

Vitamin D in Pregnancy: Boost Baby's Health & Reduce Risks

Vitamin D3 vs. D2: Which Is Best?

Vitamin D for Colds & Flu: Does It Really Help?

Vitamin D & Calcium: Can They Prevent Broken Bones?

Vitamin D for Muscle Strength: Does it Work?

Vitamin D for Back Pain: Does It Help?

Vitamin D & Early Menopause: What's the Link?

Vitamin D for Hives? Research Says Yes!

Vitamin D Boosts Exercise Benefits for Women

About Our Research Analysis