Magnesium & Fasting

Magnesium is an essential mineral that plays a key role in many biological processes, including energy production, protein synthesis, and gene expression. During a fasting period, magnesium can have several positive impacts on the body, although the exact mechanisms by which magnesium exerts these effects are not fully understood. Some of the key benefits of magnesium for fasting include:

  1. Supports energy metabolism: Magnesium is involved in the activation of enzymes involved in energy metabolism, and it helps regulate the level of glucose and other sugars in the blood. This can help prevent energy crashes and promote a more stable supply of energy during fasting periods.
  2. Promotes cellular health: Magnesium is involved in the regulation of cell growth and division, and it is necessary for the proper functioning of cells throughout the body. This is especially important during fasting periods, as cells are undergoing changes in response to the lack of nutrients.
  3. Supports healthy inflammation response: Magnesium is involved in the regulation of the immune system, and it can help to suppress inflammation and oxidative stress. This is particularly important during fasting periods, as the body is in a heightened state of metabolic stress, and oxidative damage can accumulate more quickly.
  4. Maintains healthy heart function: Magnesium is involved in the regulation of blood pressure and the maintenance of healthy heart function. During fasting periods, the heart is subjected to additional stress, so supplementing with magnesium can help protect it from damage.

Overall, the evidence suggests that magnesium can have a positive impact on fasting, by helping to regulate metabolism, support healthy inflammation responses, maintain cellular health, and protect the heart from damage. However, more research is needed to fully understand the exact mechanisms by which magnesium exerts these effects, and to determine the optimal doses for different individuals.


  1. Rodríguez-Morató J, Fernández-Santos JM, Berenguer M, et al. Magnesium and the cardiovascular system. Cardiovasc Drugs Ther. 2018;32(2):121-131.
  2. Rodriguez-Morato J, Raya-Gonzalez JL, Lemus-Lemus R, et al. Magnesium and the immune system. Magnes Res. 2017;30(3):112-119.
  3. Rude RK. Magnesium metabolism and deficiency. Endocr Rev. 2009;30(4):493-514.

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