Prevalence of Vitamin D Insufficiency in Patients With Parkinson Disease and Alzheimer Disease

Serum Vitamin D Deficiency as a Predictor of Incident Non-Alzheimer Dementias: A 7-Year Longitudinal Study

“…In this sense, our results are coherent with previous experimental and cross-sectional cohort studies that highlighted an association of hypovitaminosis D with PD [26,27,28,29] and stroke [7,10]. For instance, vitamin D deficiency was observed more often among PD patients compared to controls whatever their functional status [26,27]. Parallel, chronic hypovitaminosis D may precipitate the occurrence of cardiovascular risk factors that are major determinants of cerebrovascular diseases, including atherosclerosis [30,31] or hypertension [32,33].…”

“…In this sense, our results are coherent with previous experimental and cross-sectional cohort studies that highlighted an association of hypovitaminosis D with PD [26,27,28,29] and stroke [7,10]. For instance, vitamin D deficiency was observed more often among PD patients compared to controls whatever their functional status [26,27].…”

Serum Vitamin D Deficiency as a Predictor of Incident Non-Alzheimer Dementias: A 7-Year Longitudinal Study

“…In this sense, our results are coherent with previous experimental and cross-sectional cohort studies that highlighted an association of hypovitaminosis D with PD [26,27,28,29] and stroke [7,10]. For instance, vitamin D deficiency was observed more often among PD patients compared to controls whatever their functional status [26,27]. Parallel, chronic hypovitaminosis D may precipitate the occurrence of cardiovascular risk factors that are major determinants of cerebrovascular diseases, including atherosclerosis [30,31] or hypertension [32,33].…”

“…In this sense, our results are coherent with previous experimental and cross-sectional cohort studies that highlighted an association of hypovitaminosis D with PD [26,27,28,29] and stroke [7,10]. For instance, vitamin D deficiency was observed more often among PD patients compared to controls whatever their functional status [26,27].…”

Effect of 12-Week BMI-Based Vitamin D3 Supplementation in Parkinson’s Disease with Deep Brain Stimulation on Physical Performance, Inflammation, and Vitamin D Metabolites

“…To the best of our knowledge, this is one of the first studies where PD patients with DBS were supplemented with vitamin D3, and it is the first when the dosage depends on the patient's BMI. Previous studies showed that patients with PD suffer from vitamin D deficiency and have a lower serum 25(OH)D3 concentration than healthy age-matched controls [15,[24][25][26][27], and our results are in line with their outcomes. We found that after supplementation based on patients' BMI, the serum concentration of 25(OH)D3 increased above the optimum level (30 ng/mL), which shows that considering the BMI when calculating the dosage is a good concept.…”

Memory, Mood, and Vitamin D in Persons with Parkinson's Disease

“…We and others have found similar relationships in other studies [32, 33]. Prior studies have shown lower vitamin D concentrations in persons with later stage PD and in PD versus Alzheimer’s patients and controls [34, 35]. It is possible that this is an example of reverse causation.…”

Serum Vitamin D Deficiency as a Predictor of Incident Non-Alzheimer Dementias: A 7-Year Longitudinal Study

“…In this sense, our results are coherent with previous experimental and cross-sectional cohort studies that highlighted an association of hypovitaminosis D with PD [26,27,28,29] and stroke [7,10]. For instance, vitamin D deficiency was observed more often among PD patients compared to controls whatever their functional status [26,27]. Parallel, chronic hypovitaminosis D may precipitate the occurrence of cardiovascular risk factors that are major determinants of cerebrovascular diseases, including atherosclerosis [30,31] or hypertension [32,33].…”

“…In this sense, our results are coherent with previous experimental and cross-sectional cohort studies that highlighted an association of hypovitaminosis D with PD [26,27,28,29] and stroke [7,10]. For instance, vitamin D deficiency was observed more often among PD patients compared to controls whatever their functional status [26,27].…”

Effect of 12-Week BMI-Based Vitamin D3 Supplementation in Parkinson’s Disease with Deep Brain Stimulation on Physical Performance, Inflammation, and Vitamin D Metabolites

“…To the best of our knowledge, this is one of the first studies where PD patients with DBS were supplemented with vitamin D3, and it is the first when the dosage depends on the patient's BMI. Previous studies showed that patients with PD suffer from vitamin D deficiency and have a lower serum 25(OH)D3 concentration than healthy age-matched controls [15,[24][25][26][27], and our results are in line with their outcomes. We found that after supplementation based on patients' BMI, the serum concentration of 25(OH)D3 increased above the optimum level (30 ng/mL), which shows that considering the BMI when calculating the dosage is a good concept.…”

Memory, Mood, and Vitamin D in Persons with Parkinson's Disease

“…We and others have found similar relationships in other studies [32, 33]. Prior studies have shown lower vitamin D concentrations in persons with later stage PD and in PD versus Alzheimer’s patients and controls [34, 35]. It is possible that this is an example of reverse causation.…”

Serum Vitamin D Deficiency as a Predictor of Incident Non-Alzheimer Dementias: A 7-Year Longitudinal Study

“…In this sense, our results are coherent with previous experimental and cross-sectional cohort studies that highlighted an association of hypovitaminosis D with PD [26,27,28,29] and stroke [7,10]. For instance, vitamin D deficiency was observed more often among PD patients compared to controls whatever their functional status [26,27]. Parallel, chronic hypovitaminosis D may precipitate the occurrence of cardiovascular risk factors that are major determinants of cerebrovascular diseases, including atherosclerosis [30,31] or hypertension [32,33].…”

“…In this sense, our results are coherent with previous experimental and cross-sectional cohort studies that highlighted an association of hypovitaminosis D with PD [26,27,28,29] and stroke [7,10]. For instance, vitamin D deficiency was observed more often among PD patients compared to controls whatever their functional status [26,27].…”

Effect of 12-Week BMI-Based Vitamin D3 Supplementation in Parkinson’s Disease with Deep Brain Stimulation on Physical Performance, Inflammation, and Vitamin D Metabolites

“…To the best of our knowledge, this is one of the first studies where PD patients with DBS were supplemented with vitamin D3, and it is the first when the dosage depends on the patient's BMI. Previous studies showed that patients with PD suffer from vitamin D deficiency and have a lower serum 25(OH)D3 concentration than healthy age-matched controls [15,[24][25][26][27], and our results are in line with their outcomes. We found that after supplementation based on patients' BMI, the serum concentration of 25(OH)D3 increased above the optimum level (30 ng/mL), which shows that considering the BMI when calculating the dosage is a good concept.…”

Memory, Mood, and Vitamin D in Persons with Parkinson's Disease

“…We and others have found similar relationships in other studies [32, 33]. Prior studies have shown lower vitamin D concentrations in persons with later stage PD and in PD versus Alzheimer’s patients and controls [34, 35]. It is possible that this is an example of reverse causation.…”