Tell me more about different types of magnesium and their benefits.

Different magnesium forms may be better suited to different goals:

• Magnesium threonate: It appears to cross the blood–brain barrier more readily than many forms. It is discussed for sleep onset and depth; possible cognitive benefits are suggested, but much of the evidence is animal research and human evidence remains limited. 1
• Magnesium bisglycinate: Often described as an alternative to threonate for sleep onset and depth. It is not known for cognitive-enhancing effects. 2
• Magnesium malate: It appears to be directed more toward muscle and peripheral magnesium stores than the brain. It may help with exercise-related soreness or recovery, though the recovery effect is described partly from personal experience. 3
• Magnesium citrate: Its best-known effect is as a laxative; it is not described as a form for sleep or cognitive support. 4
• Magnesium’s broader roles: It is needed for energy production, DNA repair, neurotransmission, and converting vitamin D into its active form. 5
• Safety: Magnesium can influence heart rhythm, so new supplementation should be approached cautiously. 6