Systematic Review and Meta-Analysis of Milk Fat Globule Membrane Supplementation for Mental Well-Being.

MFGM supplementation produced small but statistically significant reductions in stress and anxiety outcomes in adults.

• A random-effects meta-analysis was performed calculating standardised mean differences for stress, anxiety, and depression outcomes.
• Effects on stress and anxiety were described as 'small but statistically significant reductions.'
• Three randomised controlled trials met inclusion criteria and contributed to the meta-analysis.
• Inclusion criteria required adult participants aged 20 years or older receiving bovine MFGM supplementation with a placebo or control group.

Effects of MFGM supplementation on depression were non-significant, though directionally favourable.

• Depression was one of the three outcome categories assessed alongside stress and anxiety.
• The paper describes depression effects as 'non-significant, though directionally favourable.'
• The authors conclude that 'the evidence for depression is inconclusive.'
• All three outcome domains (stress, anxiety, depression) were measured using standardised mean differences in the random-effects meta-analysis.

Only 3 of 35 initially identified articles met the inclusion criteria for the systematic review and meta-analysis.

• 35 articles were initially identified through systematic literature search across multiple databases using combined relevant keywords and Medical Subject Headings terms, with manual reference checks.
• Inclusion criteria required: adult participants (≥20 years), bovine MFGM supplementation, a placebo or control group, and outcomes measuring stress, anxiety, or depression.
• The small number of included studies limited interpretation of publication bias assessments.

Risk-of-bias assessments using Cochrane criteria indicated low concerns across the included trials.

• Cochrane criteria were used to conduct risk-of-bias assessments across the three included randomised controlled trials.
• Assessments 'indicated low concerns across trials.'
• Publication bias was assessed but 'was not indicated,' though interpretation was limited by the small number of studies.

MFGM is described as a complex structure with anti-inflammatory, neuroprotective, and gut-modulatory properties relevant to psychological outcomes.

• MFGM is composed of polar lipids, gangliosides, and glycoproteins.
• Preclinical and human studies have demonstrated anti-inflammatory, neuroprotective, and gut-modulatory effects.
• Prior to this review, MFGM's effects on adult psychological outcomes had 'not been systematically synthesised.'
• The authors propose MFGM supplementation 'could be part of a nutritional strategy to support overall mental well-being.'