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
Sex positions with names: the most common variants, explained clearly
Names like Missionary position, Doggy Style, Cowgirl, or Wiener Auster come up all the time, but it is often not obvious what people actually mean by them.
Vasectomy: procedure, what it does, risks, and follow-up
A vasectomy is a minor surgical procedure for permanent contraception.
HIV: What you should know about transmission, symptoms, testing, and treatment
This guide explains HIV clearly and without alarm: what the virus is, how it spreads, which symptoms can appear, how tests should be interpreted, and why modern treatment changes so much.
HIV in Everyday Life: What Really Matters After a Diagnosis in Canada
This article is for people living with HIV after diagnosis in Canada and looks at what really matters in daily life, relationships, work, travel, and self-image.
Male contraception: condoms, vasectomy and hormonal options explained
For now, male contraception means mostly condoms or vasectomy.
Endometriosis and Fertility: When It Affects Conception and What Can Help
Endometriosis can make conception harder, but it does not always mean infertility.Understanding AMH: what does it really say about ovarian reserve and fertility?
AMH is a useful clue when you are planning a pregnancy and want to understand ovarian reserve.
Checking fallopian tube patency: HSG, HyCoSy, how it works, pain and what the test can tell you
When pregnancy is taking longer than expected, checking the fallopian tubes is often a sensible next step.The Two-Week Wait: Symptoms, Progesterone, Test Timing, and What Not to Take as Proof
The two-week wait is the stretch between ovulation and the point when a pregnancy test is worth trusting.
Letrozole for fertility care: what it does, how it is taken, side effects, and when it is used
Letrozole is often used in fertility care when ovulation does not happen regularly or needs a targeted push.Clomiphene or Letrozole: What Is the Difference in Cycle Treatment and Ovulation Induction?
Clomiphene and letrozole are both used when a cycle needs support or ovulation needs to be triggered on purpose.
Embryo Transfer During IVF and ICSI: Procedure, Timing, Aftercare, and Realistic Expectations
Embryo transfer is the final visible step in IVF or ICSI, but the real work is preparation, timing, and the calmer period afterward.Embryonic development day 1 to day 5: what morula and blastocyst really mean
The first five days after fertilization can sound like pure lab language during fertility treatment.
Trying to Conceive After a Miscarriage: When You Can Start Again and What Is Medically Sensible
After a miscarriage, the wish for another pregnancy can carry hope, pressure, and uncertainty all at once.
What people do not say out loud when looking for a sperm donor, but mean
People often talk about profiles, values, and tests when they look for a sperm donor.What people do not say out loud when looking for a sperm donor, but mean
People often talk about profiles, values, and tests when they look for a sperm donor.
When family is not on board: how to explain alternative family planning
Not every alternative family plan makes sense immediately to the people around you.Why family planning can feel more like project management than romance
Modern family planning is often not just about feeling, but also about timing, agreements, documents, and many small decisions.
Why are testicles so sensitive? Causes, warning signs, and what helps now
Testicles often react more strongly to touch, pressure, and pulling than many people expect because their position, nerve supply, and free suspension make them especially sensitive.
Vulva and vagina: the difference explained in plain language
Vulva and vagina are often mixed up in everyday language, even though they are not the same thing.
How sperm quality changes with age, stress, and lifestyle
Sperm quality does not stay fixed.
Is phimosis serious? When it can be normal, when to get it checked, and what helps in Canadian care
Phimosis is not automatically serious.