Table of contents
Depression and Vitamin D: A Peculiar Relationship
Cureus. 2022 Apr 21;14(4):e24363. doi: 10.7759/cureus.24363
Nisha Saji Parel 1, Parimi Vamsi Krishna 2, Anuradha Gupta 3, Kamsika Uthayaseelan 4, Kivonika Uthayaseelan 5, Monika Kadari 6, Muhammad Subhan 7, Sripada Preetham Kasire 8
List of criteria
Randomized Controlled Trials
Depression is a psychiatric disorder characterized by various symptoms that can impact one's quality of life. Vitamin D, a fat-soluble vitamin, is well-known for its role in bone health, and research on its effects on mental health has only recently emerged. Vitamin D deficiency is widespread worldwide, and it has been linked to an increased risk of depression. In this article, we have discussed different hypotheses that explain the role of vitamin D in gene expression and its effects on neurotransmitters and different brain functions. We have reviewed literature that shows us that Vitamin D deficiency is a risk factor for depression and explored studies that show us the effects of using or supplementing Vitamin D in preventing depression among various populations.
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Intervention of Vitamin D for Depression
- Depression cost-effectively reduced by 50,000 IU of Vitamin D monthly (Iranian teens) – July 2023
- Infants getting an additional 800 IU of vitamin D for 2 years had 60% fewer psychiatric symptoms at age 7 – RCT May 2023
- Anxiety and Depression decreased in senior prediabetics with weekly 25,000 IU of Vitamin D – RCT Sept 2022
- Depression decreased by Vitamin D (12th study in VitaminDWiki) – RCT Nov 2022
- Overweight needed more EPA (4 grams) to fight depression – RCT Aug 2022
- Omega-3 did not prevent depression (they failed to reduce Omega-6, which blocks Omega-3) – RCT Dec 2021
- Weekly Vitamin D plus daily Magnesium is great (reduced depression in obese women in this case) – July 2021
- Depression in psychiatric youths reduced 28 percent after just 1 month of vitamin D – RCT Feb 2020
- Yet another study confirms Depression is treated by weekly Vitamin D (50,000 IU)– RCT Dec 2019
- Depression decreased after vitamin D (50,000 IU weekly to elderly in the case) – RCT Oct 2019
- Vitamin D - no cure for depression (when you use only 1200 IU) – Aug 2019
- Depression reduced in Diabetics with 3 months of 4,000 IU of vitamin D – RCT July 2019
- Vitamin D treatment of diabetes (50,000 IU every 2 weeks) augmented by probiotic – RCT June 2018
- Women had better sexual desire, orgasm and satisfaction after Vitamin D supplementation – Feb 2018
- Vitamin D depression RCT canceled: too many were taking Vitamin D supplements, etc. Feb 2018
- Depression in adolescent girls reduced somewhat by 50,000 IU weekly for 9 weeks – July 2017
- Perinatal depression decreased 40 percent with just a few weeks of 2,000 IU of vitamin D – RCT Aug 2016
- Just 1500 IU of Vitamin D significantly helps Prozac – RCT March 2013
- Reduced depression with single 300,000 IU injection of vitamin D – RCT June 2013
- 40,000 IU vitamin D weekly reduced depression in many obese subjects – RCT 2008
- 50,000 IU Vitamin D weekly Improves Mood, Lowers Blood Pressure in Type 2 Diabetics – Oct 2013
Meta-analyses of Vitamin D and Depression
- Depression reduced by 8,000 IU of Vitamin D daily – meta-analysis Nov 2024
- Depression 1.6 X more likely if low Vitamin D, taking Vitamin D reduces depression – umbrella of meta-analyses – Jan 2023
- Depression in seniors greatly reduced by Vitamin D (50,000 IU weekly) – meta-analysis June 2023
- Depression reduced if take more than 5,000 IU of vitamin D daily – umbrella meta-analysis – Jan 2023
- Depression reduced if use more than 2,800 IU of vitamin D – meta-analysis Aug 2022
- Depression is treated by 2,000 IU of Vitamin D – 2 meta-analyses July 2022
- Depression treated by 50K IU Vitamin D weekly (but not 1,000 IU daily) – meta-analysis Jan 2021
- Mental disorders fought by Omega-3 etc. - meta-meta-analysis Oct 2019
- Depression less likely if more Vitamin D (12 percent per 10 ng) – meta-analysis July 2019
- Anxiety severity reduced if more than 2 grams of Omega-3 – meta-analysis Sept 2018
- Less depression in seniors taking enough Omega-3 – meta-analysis July 2018
- Unipolar depression treated by Omega-3, Zinc, and probably Vitamin D – meta-analysis Oct 2017
- Depression is associated with low Magnesium – meta-analysis April 2015
- Clinical Trials of vitamin D can have “biological flaws” – Jan 2015
- Slight depression not reduced by adding vitamin D if already had enough (no surprise) – meta-analysis – Nov 2014
- Anti-depression medication about as good as big increase in vitamin D – meta-analysis of flawless data April 2014
- Depression might be reduced by vitamin D – meta-analysis March 2014
- Low vitamin D and depression - Study and meta-analysis, April 2013
- 2X more likely to be depressed if low vitamin D (cohort studies) - Meta-analysis Jan 2013
VitaminDWiki - Depression summary
- Low vitamin D is associated with most types of depression, Including: Seasonal Affective Disorder. manic depression, bipolar disorder, dysthymia, Depression during/after pregnancy, Seniors, Suicide
- Depression substantially reduced by Vitamin D, Omega-3, Magnesium, etc – many studies
- Depression 1.6 X more likely if low Vitamin D, taking Vitamin D reduces depression – umbrella of meta-analyses – Jan 2023
- Depression: Low vitamin D in the strongest of 11 risk factors – Jan 2023
- Yet another study confirms Depression is treated by weekly Vitamin D (50,000 IU)– RCT Dec 2019
- Depression treated by Omega-3 (again) – meta-analysis Aug 2019
- Supplementing with Vitamin D (or getting more sun) decreases most types of depression as well as drugs
- Omega-3, Magnesium, and St. Johns' Wort also decrease depression
- Speculate that some combination (Vit D, Omega-3, Mg, St John's) will decrease depression even more
- Note: Both Omega-3 and Magnesium increase the amount of vitamin D which gets to tissues
- Antidepressants reduce cellular Vitamin D, increasing fractures, CVD, etc. - Oct 2022
- There are
268 items in the Depression category in VitaminDWiki Some recent publications
- Depression in seniors greatly reduced by Vitamin D (50,000 IU weekly) – meta-analysis June 2023
- Depression reduced if take more than 5,000 IU of vitamin D daily – umbrella meta-analysis – Jan 2023
- Post-partum depression and low Vitamin D - many studies
- Depression: Low vitamin D in the strongest of 11 risk factors – Jan 2023
VitaminDWiki - Suicide associated with low vitamin D - many studies contains
7 Hints that suicide is associated with low vitamin D:
- 1) Giving Vitamin D decreases suicide attempts
- 2) Suicide peaks in the Spring, when vitamin D values are lowest
- 3) Suicide has increased while vitamin D has been crashing
- 4) Suicide higher in dark-skinned individuals (low vitamin D due to built-in sun protection)
- 5) Suicide higher in prison (shut-ins have low levels of vitamin D)
- 6) Suicide attempts by males 3.7 X more likely if poor Vitamin D gene (CYP24A1) – Oct 2021
- 7) Suicide rate is higher at high latitudes (where vitamin D is less available)
See Criteria to associate a health problem with low vitamin D
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