Skip to content
How to Help
10 Early Warning Signs of Parkinson's Disease
Medications for Motor Symptoms of PD
Surgical Treatment Options
Speech & Swallowing
Clinical Studies and Clinical Trials
Recursos en Español
You are here:
Vitamin B12 is an important factor in brain and nerve health, especially memory.
Dietary Vitamin B12 is found in animal protein sources such as meat, eggs, fish and dairy products.
As people age, they may develop difficulty absorbing B12 from the gut, even if the amount in their food sources is adequate.
Oral supplements (usually 1000 mcg) may help, although persons with severe B12 absorption problems or deficiencies may require injections.
Vegetarians may also develop a B12 deficiency.
A chemical called homocysteine sometimes becomes elevated in persons with PD, often in conjunction with levodopa therapy.
Elevation of homocysteine may be related to memory loss in some patients, although this is unproven.
Increasing B12 and folic acid will often result in a decrease in homocysteine levels, though it is not yet known whether this will improve memory.
Currently: 3 (5 ratings)
Topics in this section
Antioxidants: Vitamin C and E, Mediterranean Diet
Calcium and Vitamin D
Ginger (Zingiber Officinalis)
Green Tea Polyphenols (GTPs)
St. John’s Wort (Hypericum Perforatum)
Milk Thistle (Silybum Marianum)
Folate (folic acid)
Press & Media Kit
© 2015 National Parkinson Foundation |