Parkinson’s and Vitamin D

The minute I discovered research studies are linking Parkinson’s disease with a deficiency in vitamin D I took the obvious route. I started taking a high quality supplement of it. Not before I did my research and fully understood what I was doing though.First, I checked that there was enough research linking Parkinson’s and vitamin D deficiency (I highlight a few of the many studies at the bottom of this post).Then, I started reading books by doctors and scientists on its role in our health. The Power of Vitamin D by Dr Sarfraz Zaidi, made the association between many diseases and disorders* and chronic deficiency of vitamin D, a hormone vital for our good health.

Most of this nutrient is acquired from exposing skin to sun, which is why we feel better and more healthy in summer months, generally suffering less ailments. But most of us see little sun, exposing limited body parts and also when we do, we cover up or slap on sunscreen! No wonder we are deficient.

Then, Dr Zaidi goes on to say that, as we age, our skin is less able to synthesise this nutrient from the sun. Another recipe for age-related diseases.

This book, and the research studies, indicated clearly that action was required. The question was what? How much of this particular supplement should I take?

The UK Department of Health recommends a Daily Allowance (RDA) of 50 micrograms, which equates to 2,000 International Units (IU) for an average person but, according to Dr Zaidi, that is a generalization which takes no account of the much-depleted levels of this nutrient in people with chronic diseases.

He also reported that a scan of research studies revealed that vitamin D3 toxicity ‘almost never occurs’.

In the end, I was guided by the research and recommendations of the Life Extension Foundation (LEF) which recommended a daily intake of 5,000 IU.

I also chose to buy my supplies from LEF because it offered both quality and good value. 60 days supply of vitamin D3, at 5,000IU per day, from LEF costs £8.95, whereas the equivalent daily dose for 50 days from Holland and Barrett stores costs £17.99 i.e. more than double.

Supplementation with this nutrient is one of the many natural and easy actions I’ve taken which, over the past two years, has seen my Parkinson’s symptoms reverse leaving me in much better health again, untroubled by the condition. If you’d like to know more about how I did this, please go and browse the rest of the website  or email me at


Journal of Neuroscience Research, 2012
Vitamin D and Parkinson’s disease

‘a significant association has been demonstrated between PD and low levels of vitamin D in the serum, and vitamin D supplement appears to have a beneficial clinical effect on PD’.

Nutrients, 2015
Associations between Vitamin D Status, Supplementation, Outdoor Work and Risk of Parkinson’s Disease: A Meta-Analysis Assessment.

‘based on the eligible studies we found that low vitamin D level was associated with increased risk of PD, which is consistent with the hypothesis that low vitamin D status is a risk factor of PD. In addition, it was indicated that vitamin D supplementation and outdoor work may reduce PD risk. Thus, optimizing vitamin D level may represent a potential avenue for the prevention of PD’

Biochemical Society Transactions, 2015.
Vitamin D: a custodian of cell signalling stability in health and disease.

‘There is increasing evidence that a deficiency in vitamin D contributes to many human diseases such as Alzheimer’s disease (AD), Parkinson’s disease (PD), multiple sclerosis (MS), hypertension and cardiovascular disease’