Transcranial Magnetic Stimulation for Health & Longevity - Quick Reference Sheet
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Transcranial Magnetic Stimulation for Health & Longevity

Created on 08/10/2026 – Quick Reference based on Evidence Review created using AI4L / Opus 5 – Audit

Magnetic pulses through the scalp shift activity in a targeted patch of brain, and the shift outlasts the session. Firmest evidence: depression that has not responded to medication, and reduced craving. Memory and thinking gains in early decline are uneven; sharpening an already healthy brain is weak and unpredictable. The real burdens are clinic visits and cost. (Full Review)

Protocol

Standard high-frequency depression protocol
10 Hz, left dorsolateral prefrontal cortex, 120% of resting motor threshold
4-second trains, 26-second intervals, around 3,000 pulses per session; five days a week for four to six weeks (30–36 sessions), then a taper of about six sessions over three weeks.
Competing approaches without a default
Theta-burst, low-frequency right-sided, deep, or accelerated
Three-minute 600-pulse theta-burst is non-inferior and has the best throughput; 1 Hz right-sided (1,200 pulses) has the best tolerability; accelerated runs ten 1,800-pulse sessions daily for five days. No head-to-head trial sets a reference standard.
Target localization method
Beam F3 method, neuronavigation preferably
The obsolete 5 cm rule frequently misses in people with larger heads; neuronavigation using individual imaging is the most accurate and is required for the accelerated protocol. Targeting error is one of the largest sources of non-response.
Time to effect
Depression, conventional course
Sessions 10–20
Roughly two to four weeks; a minority change earlier and a meaningful group convert only in the final two weeks. Durability after a completed course is measured in months.
Depression, accelerated course
Days
Accelerated protocols compress the onset window to days, with the reported reduction measured four weeks after a five-day course.
Cognition in mild impairment
More than 10 sessions
Cognitive endpoints in impairment populations generally require more than ten sessions before any change is detectable.

Benefits

Contraindications
  • Any ferromagnetic or electronically active implant within roughly 30 cm of the coil (aneurysm clips and coils, cochlear implants, deep brain or vagus nerve stimulators, intracranial electrodes, metallic fragments in the head or eye, cranial stents or plates)
  • Concurrent electroconvulsive therapy
  • Cardiac pacemakers and implantable defibrillators (strong relative, cardiology sign-off)
  • Deferral: active alcohol or sedative withdrawal, uncorrected sodium below 130 mmol/L, myocardial infarction within 90 days
  • Specialist assessment: diagnosed epilepsy, unprovoked seizure at any time in the past, head injury with loss of consciousness, intracranial mass, raised intracranial pressure
  • Pregnancy (relative caution, case by case)
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Key Interactions
  • Drugs that lower the seizure threshold (bupropion above 400 mg daily, clozapine, tramadol, theophylline, chloroquine, imipenem, isoniazid, cyclosporine, high-dose clomipramine)
  • Benzodiazepines and anticonvulsants (lorazepam, clonazepam, diazepam, alprazolam, valproate, carbamazepine, levetiracetam, lamotrigine, topiramate)
  • Over-the-counter medications (diphenhydramine, dextromethorphan, high-dose caffeine)
  • Supplement interactions (high-dose magnesium and zinc, valerian, kava, high-dose L-Theanine, Ginkgo biloba, high-dose evening primrose oil)
  • Supplements with additive effects (St John's wort, S-adenosylmethionine, 5-hydroxytryptophan, L-Tryptophan, saffron extract, high-dose omega-3 fatty acids)
  • Ketamine and esketamine
  • Alcohol
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Risk & Side Effects

  • High: Scalp pain and local discomfort during stimulation; headache; seizure induction
  • Medium: Acoustic exposure and hearing effects; facial, jaw and eye muscle twitching; treatment-emergent hypomania or mania
  • Low: Vasovagal syncope; transient cognitive effects; transient worsening of mood or emergent suicidal ideation
  • Speculative: Cumulative effects of very-high-dose accelerated protocols; unknown consequences of long-term repeated maintenance

Monitoring

Marker Target Why
TSH 0.5–2.0 mIU/L Thyroid underactivity mimics low mood and cognitive slowing
Free T4 Upper half of the reference interval Confirms whether thyroid output itself is low when TSH is borderline
25-OH vitamin D 40–60 ng/mL Low status is associated with depressed mood and poorer cognitive performance
Vitamin B12 500–1,000 pg/mL Deficiency produces reversible cognitive and mood symptoms
Ferritin 70–150 ng/mL (women), 100–200 ng/mL (men) Low iron stores drive fatigue and impaired attention that are easily mistaken for non-response
Sodium 138–142 mmol/L Low sodium lowers the seizure threshold
Magnesium (RBC) 5.0–6.5 mg/dL Low magnesium lowers the seizure threshold; very high intake may blunt plasticity
HbA1c 4.8–5.4% Poor glucose control accelerates cognitive decline and confounds any cognitive endpoint
hs-CRP < 0.5 mg/L Systemic inflammation independently drives low mood and cognitive symptoms
Resting motor threshold Output producing a hand muscle response in 5 of 10 pulses; dosing at 100–120% Sets the delivered dose; prevents underdosing, which produces non-response, and overdosing, the main modifiable driver of seizure risk

Cadence: Laboratory panel at baseline; repeated only when a value was abnormal at baseline, typically 3 months after correction, or annually thereafter. Resting motor threshold re-measured at least weekly and after any medication change. Symptom ratings at every visit, with formal review at sessions 10, 20 and 30, then at 1, 3, 6 and 12 months after the acute course; a brief mania rating scale weekly for anyone with bipolar risk; cognitive testing at the end of the course and at 3 and 6 months where cognition is the target.

Qualitative Assessment

  • Anhedonia: return of interest or pleasure in activities that had become flat; frequently the earliest reported change
  • Sleep quality: time to fall asleep, night-time awakenings and how restored on waking, as a simple daily rating
  • Energy and morning activation: whether getting started in the morning still requires disproportionate effort
  • Cognitive clarity: subjective ease of word-finding, holding a train of thought, and sustaining attention
  • Emotional reactivity: whether ordinary setbacks still produce a disproportionate or prolonged response
  • Irritability or activation: tracked as a warning marker, since early over-activation is the first sign of a mood switch
  • Scalp tolerance: discomfort per session, which should fall over the first week; a rise instead suggests coil position or intensity needs adjusting
Not medical advice. Educational distillation of a single evidence review. Confirm any decision with a qualified clinician, especially in the presence of prescription drugs or chronic conditions.