Two substances that determine sleep quality have been discovered

Scientists discovered a connection: low magnesium - poor sleep, high zinc - healthy rest

In a large-scale study conducted by specialists from King Saud University, a clear relationship between microelement levels in the body and sleep quality was identified. About a thousand volunteers participated in the experiment, the results of which were published in the authoritative journal Nutrients.

Using the Pittsburgh Sleep Quality Index - a recognized assessment tool in the medical community - researchers compared the obtained data with the concentration of essential microelements in participants' blood and their dietary habits.

Magnesium showed the most significant correlation with sleep quality. People with insufficient levels of this element both in blood and diet substantially more often suffered from sleep problems. Importantly, this pattern remained consistent even after adjusting the results to account for participants' age, gender, and body weight.

Interestingly, zinc demonstrated an inverse relationship - high levels of this microelement in blood corresponded to better sleep quality. However, the amount of zinc in daily diet did not directly affect sleep, which indicates possible peculiarities in absorption or metabolism.

As for copper, neither its content in blood nor its presence in diet had a noticeable impact on participants' sleep quality.

Scientists note that the current research does not provide a definitive answer about the direction of causality: whether micronutrient deficiency causes sleep problems, or sleep disturbances lead to changes in their levels in the body. Long-term studies and experiments with dietary supplements will be required to reach final conclusions.