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New study illustrates an increased interest in vitamin D among the public over the past decade

Posted on: March 31, 2017   by  Amber Tovey

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A new study found that internet search rates for “vitamin D” dramatically increased from 2004 to 2010 with a seasonal peak in late winter.

Scientific interest in vitamin D has increased in recent years. Research has shown that vitamin D plays a role in a variety health outcomes, including cancer, cardiovascular disease, mental illness, diabetes, pregnancy, autism and mortality. Despite this newly found knowledge, studies have also suggested that much of the general public remains uninformed.

A recent study sought to explore whether the public interest reflects the increasing scientific interest in vitamin D. The researchers specifically wanted to understand the vitamin D trends in internet searches.

The researchers noted,

“The Internet is now an important source of health information for the general public, and many individuals will frequently use the Internet as first line when in need of health-related information.”

The data for internet search activity was obtained using Google Trends, because approximately 65% of all internet searches take place on Google.

Internet search activity for vitamin D significantly increased from 2004 to 2010 (p < 0.001). People searched for vitamin D the most in the United States and Australia in the northern and southern hemispheres, respectively.

graph of vitamin D internet trends

Since 2010, vitamin D searches has varied according to season. The vitamin D searches peaked in February in the U.S. and August in Australia.

graph of vitamin D internet trends

The researchers wanted to determine whether the seasonal patterns and increase reflected general internet searches or vitamin D searches specifically. So, they assessed the Google searches for the terms “osteoporosis,” “rickets,” “back pain” and “folic acid.” None of these search terms increased exponentially between the years of 2004 and 2010. This indicated a rise in general public interest of vitamin D, reflecting scientific interest.

Furthermore, the seasonal peaks weren’t observed for the other health and nutritional terms, meaning that the seasonal peaks for vitamin D searches were unique and not indicative of a general increase in internet use.

The researchers concluded the implications of identifying seasonal peaks,

“This information could be used to guide public health approaches to managing vitamin D deficiency.”

Citation

Tovey, A. & Cannell, JJ. New study illustrates an increased interest in vitamin D among the public over the past decade. Vitamin D Council Blog & Newsletter. March 21, 2017.

Source

Moon, R. et al. Seasonal variation in Internet searches for vitamin D. Archives of Osteoporosis, 2017.

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