A six-domain framework for the preparation before IVF or natural conception. Co-authored by Dr Vasileios Sarafis and Dr Luca Gianaroli, Director of Global Educational Programs at the International Federation of Fertility Societies. Designed to run in parallel with treatment, not as a prerequisite.
The S.A.F.A.R.I. Protocol synthesises evidence from sleep medicine, nutritional science, reproductive endocrinology, environmental health, and behavioural psychology into a structured 12-week framework that fits inside the clinical pathway.
Spermatogenesis takes around 74 days. Final oocyte maturation, including the gonadotropin-dependent antral phase, spans approximately 90 days. The interval before conception is therefore the period in which lifestyle, nutritional, and environmental factors can plausibly influence the gametes being prepared right now — not in retrospect, but in real time.
Patients are routinely told to "come back in three months" before starting an IVF cycle, or to "try naturally for another cycle." That interval is the most biologically meaningful period of the fertility journey — and for most people, it is also the period where it is hardest to know what to actually do.
The S.A.F.A.R.I. Protocol gives that interval a structure.
S.A.F.A.R.I. addresses the documented gap between accumulating preconception evidence and the absence of a clinical framework for delivering it. Each letter is one domain of intervention, supported by published literature, sequenced to layer progressively rather than sequentially.
A consistent wake time, 7–8 hours of sleep opportunity, and daily regulation practice. The widest guideline–evidence gap in preconception care: no major society addresses sleep for fertility.
A Mediterranean dietary pattern with protein anchoring at each meal, glycaemic stability, and couples-based implementation. The strongest and most consistent dietary signal in the preconception literature.
3D ultrasound, HyFoSy, full thyroid panel, fasting insulin, ferritin, vitamin D, B12, HbA1c. Reclassification rates of "unexplained infertility" reach 58% with adequate investigation.
A tiered hierarchy: deficiency correction first, then foundational support, then mitochondrial precision, then condition-specific additions. Deficiency correction beats bottle-stacking.
Endocrine disruptors (BPA, phthalates), heat exposure for men, smoking, and excessive alcohol. Pragmatic, prioritised swaps with favourable risk–benefit profiles.
Supplement coordination around procedures, dropout prevention, and the "Minimum Viable Safari" — a minimum effective dose of intervention that survives the emotional burden of treatment.
The protocol unfolds across three phases, each building on the last. The compass points run continuously; the phases are how they are sequenced into something a couple can actually follow.
Foundational habits and baseline investigations. Sleep reset, protein anchoring, the "Big Three" labs (vitamin D, ferritin, B12/folate), thyroid optimisation where clinically relevant. The male partner starts on day one.
Targeted interventions based on diagnostic findings. Functional and metabolic markers, advanced 3D and Doppler ultrasound, and the supplement layering that follows from the data. The protocol becomes specific to each couple.
Hormetic stress, treatment alignment, sustainable habit consolidation. The "Minimum Viable Safari" — a minimum effective dose that holds through the two-week wait, through cycle setbacks, and through whatever the clinical pathway demands.
Each S.A.F.A.R.I. domain is supported by published evidence. The strength of that evidence varies — some domains rest on meta-analyses of randomised trials, others on observational data with consistent direction. The protocol's contribution is to organise these into a single coordinated framework.
Good sleep quality and clinical pregnancy rate in ART. Pooled meta-analysis.
Eight studies, n=6,754. Archives of Gynecology and Obstetrics, 2025. 95% CI 1.16–2.03.IVF live birth rate in highest-adherence Mediterranean diet tertile, women under 35.
Karayiannis et al., Human Reproduction, 2018. n=244 non-obese IVF patients, Greece.CoQ10 supplementation and clinical pregnancy rate. Strongest signal in DOR and PCOS.
Florou et al., 2024. Meta-analysis of 9 RCTs, n=1,028 women. 95% CI 1.26–2.22.ART discontinuation rate. The single largest preventable barrier to cumulative live birth.
Shen et al., 2026. 62 studies, n=330,593 patients. 95% CI 0.31–0.41.Cumulative success advantage of treatment completers vs all starters.
Gameiro et al., 2012. 22 studies, n=21,453 patients. 57.9% vs 42.7%.Reclassification rate of "unexplained infertility" with diagnostic laparoscopy.
Van Gestel et al., 2024. Systematic review, 11 studies, n=1,707 patients.The integrated S.A.F.A.R.I. Protocol has not been prospectively evaluated in any study design. Component-level evidence varies. The full evidence synthesis, with grading and limitations, is set out in the manuscript in publication. A pragmatic registry study and stepped-wedge cluster-randomised trial are proposed as the next research steps.
Despite four decades of progress in assisted reproductive technology, per-cycle live birth rates remain below 40% even in favourable prognostic groups. Approximately 25–30% of infertile couples receive a diagnosis of "unexplained infertility" — a label that, on systematic review, reflects inconsistent diagnostic criteria more than absent pathology.
Meanwhile, evidence has accumulated implicating modifiable, periconceptional factors in reproductive outcomes. Sleep, nutrition, stress, micronutrient status, and environmental exposures have each been linked to gamete quality, endometrial receptivity, and treatment outcomes — through well-characterised mechanistic pathways.
Yet no major fertility society — ESHRE, ASRM, NICE, or WHO — recommends a structured, multimodal preconception optimisation programme.
This is what the manuscript terms the guideline–evidence gap: a space where convergent data from sleep medicine, nutritional science, reproductive endocrinology, environmental health, and behavioural psychology support multimodal preconception optimisation, yet no clinical framework translates that evidence into actionable care.
The S.A.F.A.R.I. Protocol exists to operationalise the dispersed evidence into a structured, evidence-informed clinical framework — not as a validated intervention, but as a testable one.
A clear plan you can hold in one hand. Six small daily actions, built around the biology of your preparation. Read the book, use the companion app, or both.
Start here → For cliniciansRead the rationale, the evidence, the parallel-implementation principle, and the proposed research agenda. Speak with Dr Sarafis directly about clinical collaboration.
See the clinical rationale →
The long-form, patient-facing reference for the S.A.F.A.R.I. Protocol. Written by Dr Vasileios Sarafis MD and prefaced by Dr Luca Gianaroli (Director of Global Educational Programs, International Federation of Fertility Societies), the book covers IVF, ICSI, IUI, and surgical considerations alongside the protocol's six compass points, the underlying evidence, and a day-by-day implementation guide written to be readable by patients and useful to clinicians.
Available on Amazon from 28 May 2026.
Personalised reproductive care recognises that each individual has unique needs, preferences and medical characteristics… every stakeholder in the field of human reproduction will benefit from reading this book, since our shared ultimate aim is to turn dreamers into parents.
Email us directly at the address below. For clinicians, journalists, and clinical collaborators — to request the manuscript on release, arrange a clinical conversation, integrate the protocol into your practice, or for press enquiries. Patient enquiries about implementation are best directed to the book or the companion app.
@ info@thesafarihealth.com →