Magnetic stimulation results

I just wonder if the iron content has anything to do with this result. Still a small number of cases, but a clear improvement.
Int J Geriatr Psychiatry. 2017 May 11. doi: 10.1002/gps.4726. [Epub ahead of print]
Effects of repetitive transcranial magnetic stimulation on improvement of cognition in elderly patients with cognitive impairment: a systematic review and meta-analysis.

Cheng CPW^1,2, Wong CSM², Lee KK², Chan APK², Yeung JWF³, Chan WC^1,2.
Author information

1
Department of Psychiatry, Queen Mary Hospital, Hong Kong.
2
Department of Psychiatry, The University of Hong Kong, Hong Kong.
3
School of Nursing, The Hong Kong Polytechnic University, Hong Kong.
Abstract

OBJECTIVE:

This systematic review and meta-analysis aimed to examine the effects of repetitive transcranial magnetic stimulation (rTMS) on cognitive function in older patients with cognitive impairment.
METHODS:

A literature search was performed for articles published in English using the 10 databases (MEDLINE, EMBASE, PsycINFO, INSPEC, the Cumulative Index to Nursing and Allied Health Literature Plus, AMED, Biological Sciences, ClinicalTrials.gov, the Cochrane Central Register of Controlled Trials and the Cochrane Database of Systematic Reviews) from their inception to May 2016. The primary outcome was cognitive function as measured by the Mini-Mental State Examination or the Alzheimer's Disease Assessment Scale-cognitive subscale.
RESULTS:

Seven RCTs were included in the meta-analysis, with a sample of 107 active and 87 sham rTMS. Active rTMS was found to be more effective in improving cognition (Hedges' g = 0.48; 95% confidence interval 0.12 to 0.84).
CONCLUSIONS:

High-frequency rTMS showed a benefit on cognition amongst older patients with mild to moderate Alzheimer's disease. rTMS was shown to have great potential as a safe and well-tolerated alternative intervention for cognition