Final answer:
Meats and refined grains are not good sources of magnesium due to processing. Dark chocolate and dairy products can provide some magnesium but should not be relied upon.
Step-by-step explanation:
Magnesium is a mineral that plays an important role in the human body, including muscle and nerve function, energy production, and bone health. While meats are generally a good source of many nutrients, they are a poor source of magnesium because this mineral is removed during processing. Refined grains, such as white bread and white rice, also tend to have lower magnesium content due to the refining process. However, foods like dark chocolate and dairy products can provide some magnesium, although they should not be relied upon as the primary source.
Learn more about Magnesium sources in foods