The missing metric in men's health.
Track, understand and improve your sperm health.
Your sperm is worse
than you think
Tick what applies. Watch your projected SHS® drop.
Most men tick at least 3.
Illustrative only. Get your real Sperm Health Score in the LOAD.® app.
What is LOAD®?
Your personal coach from shooting blanks to loaded chambers.
One number (0-100) that reflects sperm health. Your fertility, drive, energy, finally trackable.
One number (0-100) that reflects sperm health. Your fertility, drive, energy, finally trackable.
HOW IT WORKS
5 minutes a day.
Results in weeks.
LOAD. runs you through a short daily check-in. Your answers are weighted against published research linking each behaviour to specific semen parameters.
YOUR SPERM HEALTH SCORE®
One number. One system. One goal.
THE NUMBERS
Sperm health is collapsing.
No one's paying attention.
The 70-day cycle
Your body rebuilds sperm every 70 days. What you do today shows up weeks later. LOAD. tracks the entire process.
Phase 1 • Week 1 – 2
Establish your baseline
Set up your profile, start daily logging, get your first SHS, complete your foundation challenges.
Phase 2 • Week 2 – 6
Influence the next cycle
LOAD. coaches you on how to achieve your goals and improve your SHS.
Phase 3 • Week 6 – 10
See the outcome
With discipline, your SHS improves and you start to feel it. Then repeat: each cycle builds on the last.
THE SCIENCE
Backed by 50+ years
of research
SHS is built on established sperm health research and shaped with input from leading UK reproductive scientists.
Understand the thinking →“Habitual alcohol consumption is associated with reduced semen volume, sperm count, and percentage of normal morphology in a dose-dependent manner.”
Jensen TK et al., BMJ Open, 2014
Read full article“Psychological stress is significantly associated with decreased sperm concentration and motility, and increased proportion of abnormal morphology.”
Nargund VH, Nature Reviews Urology, 2015
Read full article“Scrotal hyperthermia from laptops, saunas, tight clothing and prolonged sitting is a significant modifiable risk factor for male infertility.”
Durairajanayagam D, Agarwal A & Ong C, Reproductive BioMedicine Online, 2015
Read full article“Both short and long sleep duration are associated with lower total sperm count and reduced sperm survival rates.”
Chen Q et al., Sleep, 2016
Read full article“Moderate physical activity is positively associated with semen quality, while sedentary behaviour and extreme exercise show negative effects.”
Gaskins AJ et al., British Journal of Sports Medicine, 2013
Read full article“A healthy dietary pattern rich in fruits, vegetables, fish and whole grains is associated with better semen quality parameters.”
Salas-Huetos A, Bulló M & Salas-Salvadó J, Human Reproduction Update, 2017
Read full article“Mobile phone exposure is associated with reduced sperm motility and viability, with effects linked to duration and proximity of use.”
Adams JA et al., Environment International, 2014
Read full article“The full cycle of spermatogenesis takes approximately 64–74 days, meaning lifestyle changes today affect sperm quality roughly 10 weeks later.”
Amann RP, Journal of Andrology, 2008
Read full article“Meta-analysis of 223 studies showing sperm counts in men declined over 50% between 1973 and 2018, with the rate of decline accelerating.”
Levine H et al., Human Reproduction Update, 2023
Read full article“Male factor is a primary or contributing cause in approximately 50% of couples experiencing infertility.”
Agarwal A et al., The Lancet, 2021
Read full article“Mortality decreased as sperm concentration increased up to 40 million/ml, across a wide range of diseases, suggesting semen quality is a fundamental biomarker of overall male health.”
Jensen TK et al., American Journal of Epidemiology, 2009
Read full article“Men with two or more abnormal semen parameters had a 2.3-fold higher risk of death compared with men with normal semen.”
Eisenberg ML et al., Human Reproduction, 2014
Read full article“Oxidative stress is implicated in 30–80% of male infertility cases, damaging sperm DNA, lipid membranes and proteins through reactive oxygen species.”
Tremellen K, Human Reproduction Update, 2008
Read full article“Heat, alcohol, diet, sleep, obesity, smoking and environmental chemicals are all modifiable lifestyle factors with documented effects on semen parameters.”
Durairajanayagam D, Arab Journal of Urology, 2018
Read full article“Paternal lifestyle and environmental exposures (diet, obesity, smoking, endocrine-disrupting chemicals, stress) alter sperm epigenetic marks, influencing fertilising ability, embryo development and offspring health.”
Akhatova A, Jones C, Coward K & Yeste M, Clinical Epigenetics, 2025
Read full article“PLCzeta is the sperm-specific protein responsible for activating the egg at fertilisation. Defects in PLCzeta cause a form of male infertility undetectable by routine clinical tests.”
Coward K et al., Reproduction, 2022
Read full article“When sperm fails to activate the egg properly, it can result in total fertilisation failure and recurrent ICSI failure, conditions that require targeted molecular diagnosis.”
Meng-Yao L et al. (incl. Coward K), Human Reproduction Open, 2022
Read full article“Lactolycopene supplementation for 12 weeks improved the proportion of fast progressive sperm by approximately 40% and improved sperm morphology in healthy males.”
Williams EA, Parker M, Robinson A, Pither S & Pacey AA, European Journal of Nutrition, 2020
Read full article“Specific modifiable lifestyle and occupational factors are significantly associated with poor semen quality in a large multi-centre UK population.”
Pacey AA et al., Human Reproduction, 2012
Read full article“Occupational exposure to glycol ethers, commonly found in paints, is associated with low motile sperm count and abnormal sperm morphology.”
Cherry N & Pacey AA et al., Systems Biology in Reproductive Medicine, 2014
Read full article“Both low-energy diet and brief dietary intervention improve sperm motility in men with obesity, demonstrating that lifestyle changes directly improve sperm parameters.”
Jayasena CN et al., Journal of Clinical Endocrinology & Metabolism, 2024
Read full article“Health optimisation remains the gold-standard management strategy for functional male hypogonadism, where low testosterone is driven by obesity, type 2 diabetes and ageing rather than irreversible HPT pathology.”
Jayasena CN et al., The Lancet Diabetes & Endocrinology, 2024
Read full article“UK clinical guidelines establishing evidence-based protocols for testosterone replacement therapy in male hypogonadism, including diagnosis, treatment and monitoring.”
Jayasena CN et al., Clinical Endocrinology, 2022
Read full article“Artificial neural networks can predict sperm concentration from lifestyle questionnaire data with 86% accuracy, demonstrating that semen parameters can be meaningfully estimated without a clinical test.”
Girela JL, Gil D, Johnsson M, Gómez-Torres MJ & De Juan J, Biology of Reproduction, 2013
Read full article“Machine learning applied to 10 modifiable lifestyle factors across 5,109 men can predict sperm concentration, motility and DNA fragmentation, with smoking as the most significant predictor.”
Ma Y, Xie Z, He X et al., Frontiers in Medicine, 2022
Read full article“Ensemble machine learning models can predict specific semen diagnostic categories (normozoospermia, oligozoospermia, teratozoospermia, asthenozoospermia) from lifestyle questionnaire data alone.”
Aykaç E, Kaya C, Çelik M et al., Reproductive Biology and Endocrinology, 2024
Read full article“Artificial intelligence is being applied across semen analysis (from sperm morphology classification and motility assessment to quality prediction) with rapid growth in clinical decision support applications.”
Riegler MA et al., Medicina, 2024
Read full article“Combining epigenetic biomarkers with machine learning could transform clinical assessment of male fertility, enabling prediction models that integrate both biological and lifestyle data.”
Various authors, Frontiers in Reproductive Health, 2025
Read full article