VDC test kit slider
VDC-Banner-new_468
VDC test kit slider
sunfriend-banner
sperti logo 1
Text size A A A
High contrast on off

Information on the latest vitamin D news and research.

Find out more information on deficiency, supplementation, sun exposure, and how vitamin D relates to your health.

Does vitamin D status influence pain in those taking statins?

A new study from the journal Atherosclerosis reports that among statin users, a vitamin D level below 15 ng/ml is associated with increased musculoskeletal pain compared to non-statin users with the same levels.

Statins are one of the most popular prescription medications used to help lower cholesterol. They are also used to treat patients with autoimmune disorders and certain cardiovascular conditions. However, non-compliance in the use of statins is relatively common because patients prescribed the medicine often experience musculoskeletal pain.

This pain, known as statin-induced myalgia (SIM), affects between 10 to 20% of statin users. Scientists have yet to discover what causes this pain, but it is suggested that coenzyme Q10 levels play a role.

Musculoskeletal pain is also a reported symptom of vitamin D deficiency. Researchers interested in this topic have found that SIM patients have lower vitamin D levels and that vitamin D deficiency might contribute to SIM over time.

As both vitamin D deficiency and statin use are independently associated with musculoskeletal pain, it is possible that in SIM patients, one or the other is the main cause of the pain. However, it may be that the pain is due to an interaction between vitamin D status and statin use. Determining the main cause of SIM could help clinicians better understand and treat SIM through modification of vitamin D status.

Recently, researchers set out to expand on the current understanding of SIM. They wanted to know if vitamin D status influenced the relationship commonly seen between statin use and musculoskeletal pain.

They looked at data from the National Health and Nutrition Examination Survey (NHANES), an ongoing survey that is often used in vitamin D research. This dataset is large and the sample demographics is representative of the general United States population.

The researchers looked at all NHANES participants over the age of 40 who had available vitamin D measurements. This included data from 4,850 non-statin users and 1,057 statin users, all of whom were included in this current study.

In the NHANES survey, the participants were asked to self-report their medication use, including use of statins. The questions were general yes or no questions such as whether or not the participants used any prescription medication in the past 30 days.

Pain was also self-reported in these surveys using yes or no questions. Additional information such as age, ethnicity, physical activity, alcohol use, and health status were collected in the survey and were used in this current study.

The researchers grouped participants based on vitamin D status for the analysis. For the main analysis they compared those with a vitamin D level less than 15 ng/ml to those with a level equal to or greater than 15 ng/ml.

In a separate analysis, they looked at the differences among those with levels less than 15 ng/ml, 15-30 ng/ml, and greater than 30 ng/ml.

The researchers wanted to know if vitamin D levels lower than 15 ng/ml, compared to higher levels, were independently related to musculoskeletal pain and whether the association with pain differed from non-statin users with similar vitamin D levels.

Here’s what they found:

  • Among all participants with vitamin D levels lower than 15 ng/ml, 43.8% of statin users reported musculoskeletal pain compared to 27% of non-statin users (P = 0.005).
  • When including statin use in the adjusted analysis, statin users with less than 15 ng/ml had a 90% increased risk of reporting musculoskeletal pain.
  • There was no association between statin use and musculoskeletal pain in statin users with a vitamin D level of 15 ng/ml or greater.
  • In the stratified groups, statin users with 25(OH)D levels less than 15 ng/ml had a 90% increased risk of musculoskeletal pain, compared to a 4% reduced risk in those with 15 ng/ml to 30 ng/ml, and a 32% reduced risk of pain in those with levels greater than 30 ng/ml.

The researchers concluded,

“In this cross-sectional nationally-representative study of 5907 individuals, we found that among adults 40 years or older with vitamin D deficiency (25(OH)D

They went on to add,

“However, among individuals with vitamin D levels equal to or greater than 15 ng/ml, no association between statin use and musculoskeletal pain was observed.”

The researchers note that the observational design of their study limits the ability to infer causation or the direction of the association observed. Additionally, all data was collected through a self-reported response, which may limit the results.

Finally, the researchers didn’t have data on the type or dose of statin used so we cannot say if a particular type of statin or a certain dosage relates to pain differently.

This research suggests that statin use is a predominant risk factor for musculoskeletal pain independent of vitamin D status. That being said, the results also show that higher vitamin D levels may help prevent SIM.

What still needs to be answered is whether improving vitamin D status specifically improves SIM or whether it just reduces the general musculoskeletal pain often associated with chronic vitamin D deficiency. Future randomized trials will best help address this challenge.

Source

Morioka, T. et al. Vitamin D status modifies the association between statin use and musculoskeletal pain: A population based study. Atherosclerosis, 2014.

  About: Jeff Nicklas

Jeff Nicklas was a staff member for the Vitamin D Council from October 2013 to January 2015. He is now pursuing his passion for public health through graduate studies.

One Response to Does vitamin D status influence pain in those taking statins?

  1. Different statins affect different Vitamin D related genes. Some statins decrease vitamin D levels and others increase vitamin D levels. http://vitamindwiki.com/tiki-index.php?page_id=444

    Log in to Reply