Philipp Marx
Founder of RattleStork
Philipp Marx is a founder of RattleStork and a former international sperm donor. He writes from first-hand experience about sperm donation, co-parenting, and alternative paths to parenthood.
Before founding RattleStork, Philipp donated sperm in several countries. That experience showed him how differently people approach donor conception, trust, personal boundaries, and co-parenting.
At RattleStork, he combines that perspective with publicly available sources and practical guidance for donors, recipients, and prospective co-parents. His personal experience is not a substitute for medical or legal advice.
Articles by this author
Total published articles:220
Vasectomy reversal: procedure, success chances, costs and alternatives
A vasectomy reversal is microsurgery that reconnects the vas deferens after a vasectomy.
Tubal reversal after sterilization: success rates, procedure, and alternatives
Tubal reversal is surgery that aims to make the fallopian tubes open again after sterilization so that pregnancy can be possible again.
Fertility treatment cost in the United States 2026: IUI, IVF, ICSI, medications, insurance, and state rules
Fertility treatment in the United States is rarely just a medical decision and almost always a financial one as well.
Paperwork after birth in the United States: checklist, deadlines, and filings in 2026
After birth, recovery, sleep loss, and new responsibility all hit at once.
Polycystic ovary syndrome (PCOS): symptoms, diagnosis, treatment, and trying to conceive
PCOS is a common hormonal and metabolic pattern that can affect your cycle, skin, weight, and fertility.
Chlamydia in 2025 - Impact on Fertility, Symptoms & Effective Prevention
Chlamydia is the most common curable sexually transmitted infection (STI) .
Fertility & Religion 2025: How faith traditions view sperm donation, egg donation, IVF/IUI, and surrogacy
This overview explains how major faith traditions today approach sperm donation -with attention to origin, lineage, openness versus anonymity, family roles, and identity rights.
Worldwide birth rate decline: fertility crisis, reasons, and solutions
A declining birth rate means that the average number of children per woman (the total fertility rate) has been falling for decades in many countries.
Female Biological Clock - Fertility after 35, Ovarian Reserve and Egg Quality
Fertility changes gradually: it becomes measurable in the early 30s, accelerates around 35, and declines markedly after 40.
Stopping the pill: how to plan the transition safely and without panic
If you want to stop the pill, a clear plan helps more than extreme advice.
Female infertility: causes, evaluation, and treatment explained clearly
When pregnancy does not happen despite trying to conceive, a clear plan helps more than guesswork.
Male infertility: causes, evaluation and modern treatment options
Unfulfilled desire to have children is one of the most stressful phases for many couples - and yet the perception persists that the problem “usually lies with the woman.
Delaying menopause: evidence-based strategies for diet and lifestyle
Many people wonder whether you can delay menopause and what really affects the timing.
Get pregnant fast: What actually helps and when medical advice makes sense
If you want to get pregnant fast, timing matters much more than internet myths.
Preterm birth: causes, warning signs, and treatment
A preterm birth is a birth before 37 completed weeks of pregnancy.
Miscarriage 2026: causes, warning signs, treatment, and a way forward
A miscarriage is a pregnancy loss in the first weeks or months and can be medically and emotionally overwhelming.
The biological clock in men: How age affects sperm quality and fertility
Male fertility isn’t endless.
Pavel Durov & the Serial-Donor Debate 2025 - When One Sperm Donation Means 50, 100, or 1,000 Children
In June 2025, Telegram founder Pavel Durov stunned the public when he revealed he has already fathered more than 100 children -six within committed relationships, but most through sperm donations in a dozen countries.
How do I tell my child they were conceived via sperm donation?
Sperm donation means using sperm from a donor to make a pregnancy possible.
The History of Sperm Donation - From Secret Experiments to the DNA-Test Era
Sperm donation is now routine for single mothers, LGBTQ+ couples, and heterosexual couples facing male infertility.
At-Home DNA Kits 2025 - Your Compass for Genes, Rules & Privacy
A home DNA kit now costs little more than a movie ticket yet answers questions such as Where do my ancestors come from?
Sperm Donation in Islam 2025: Nasab, Marriage, Donor Anonymity, Legal Schools & Country Practice
Whether sperm donation is permissible in Islam is evaluated differently across legal schools and countries.