Related Experiment Video
Updated: Jan 30, 2026

Comprehensive Autopsy Program for Individuals with Multiple Sclerosis
Published on: July 19, 2019
Effect of vitamin D replacement on depression in multiple sclerosis patients
Mamdouh Ali Kotb1, Ahmed M Kamal2, Nasser M Aldossary3
1Neurology Department, College of Medicine, Prince Sattam bin Abdulaziz University, P.O.Box 173, Alkharj 11942, Saudi Arabia; Neurology Department, Faculty of Medicine, Minia University, Minia, Egypt.
Background:
Multiple sclerosis (MS) is a chronic demyelinating disease of the central nervous system. Depression is common among MS patients. In patients without MS, lower vitamin D levels were associated with higher depression scores and severity. Supplementation of vitamin D was associated with significant improvement of depressive symptoms.
Objective:
to evaluate the relation between vitamin D levels and depression scores, and the effect of vitamin D replacement on the depressive symptoms in patients with MS.
Methods:
The study included 35 patients with relapsing remitting multiple sclerosis. Neurological, psychiatric, and radiological evaluations were done. Participants received 10,000 IU of cholecalciferol daily for 12 months.
Results:
Vitamin D level was low at baseline. Depressive symptoms were high at baseline and improved with vitamin D replacement although, Expanded Disability Status Scale (EDSS) score was not improving. Vitamin D levels correlated negatively with depressive symptoms at baseline and follow up periods.
Conclusion:
Lower vitamin D levels are associated with higher depressive scores, and vitamin D replacement could improve depressive symptoms in patients with relapsing remitting multiple sclerosis.
Related Concept Videos
Long-term Depression
Long-term Depression
Calcium Ion Concentration Mechanism
If over...
Vitamins
Freezing Point Depression and Boiling Point Elevation
The boiling point of a liquid is the temperature at which its vapor pressure is equal to ambient atmospheric pressure. Since the vapor pressure of a solution is lowered due to the presence of nonvolatile solutes, it stands to reason that the solution’s boiling point will subsequently be increased. Vapor pressure increases with temperature, and so a solution will require a higher temperature than will pure solvent to achieve any given vapor pressure, including one...
Depressants
Alcohol is a common depressant that can induce a sense of relaxation and reduced inhibition at low doses. Contrary to its occasional...
Depression: Overview

