Skip to main content

Thank you for visiting You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

Artificial Hibernation


AS I have already shown in preliminary communications1,2, artificial hibernation is produced in hedgehogs in autumn by giving them injections of magnesium simultaneously with insulin and transferring the animals to an ice-box. Thereby, for example, the heat regulation of the animals was disturbed, and they passed from a warm-blooded state into a cold-blooded one. At the same time, the blood sugar value was decreased to the level of that found in normal hibernation. In the first series of experiments I employed comparatively large amounts of magnesium and insulin. Similar amounts of insulin given without magnesium always caused fatal hypoglycæmia.

This is a preview of subscription content, access via your institution

Access options

Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.


  1. Suomen Kemistilehti, B, 11, 29 (1938).

  2. Nature, 142, 1157 (1938).

    Article  ADS  CAS  Google Scholar 

  3. Z. ges. exper. Med., 42, 570 (1924).

  4. Amer. J. Physiol., 80, 75 (1927).

  5. Pfiüg. Arch., 227, 235 (1931).

  6. Suomalainen, Nature, 141, 471 (1938).

    Article  ADS  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations


Rights and permissions

Reprints and Permissions

About this article

Cite this article

SUOMALAINEN, P. Artificial Hibernation. Nature 144, 443–444 (1939).

Download citation

  • Issue Date:

  • DOI:

This article is cited by


By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.


Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing