Authors

Selin Editorial Team

We help make menstrual health easier to understand. Through Selin’s guides and tools, we explore the everyday questions that come with periods, ovulation and getting to know your cycle.

A little about the team

At Selin, educational guides and web tools sit alongside the period-tracking app. Our editorial work gives those resources context: explaining unfamiliar words, bringing related topics together and helping readers find a useful place to start.

Some people come to Selin with their first questions about periods. Others have years of cycle records and want to understand a particular detail. We write with both in mind. There is room here for a quick explanation and for a closer look at a subject that matters to you.

A question can be small and still deserve a clear answer. What counts as the first day of a cycle? Why are cycle length and the number of bleeding days different? What does a calendar estimate actually show? These are the kinds of questions our educational resources help readers explore.

What we write about

Periods and cycle patterns

A starting point for understanding the menstrual cycle, bleeding and the language used to describe period patterns. Our guides explain everyday distinctions—such as the difference between cycle length and period length—so dates in a calendar become easier to read.

Ovulation and fertility awareness

An introduction to ovulation, the fertile window and how these ideas fit into the menstrual cycle. Readers can explore the terms in our guides, then look at the method behind a calculator to understand how a calendar estimate is worked out.

Changes you notice

When something feels different, it helps to have words for it. Articles about changes in timing, bleeding and symptoms offer context and can help you describe an observation more clearly when you want to discuss it.

Tracking in everyday life

Practical explanations for recording dates, looking back over completed cycles and noticing patterns over time. A useful record can be simple: the dates you remember, the observations you choose to note and the questions you want to return to.

Behind the pages

We explain unfamiliar terms before building on them, use examples that make ideas easier to follow and leave room for different experiences. You should be able to find an answer without working through a page of jargon.

For the people behind individual articles, visit our author directory. It includes Michael Shore and David Zibert, whose names appear on published Selin articles. Where a page names a medical reviewer, that credit is shown separately from the author.

Medical Review and Clinical Expertise

Elena Vasilieva

Dr. Elena Vasilieva

Elena Vasilieva is a gynecologist and sexologist at Selin. She reviews medical and reproductive-health content for accuracy, clarity and relevance, including topics such as menstrual health, ovulation and contraception.

Look for her reviewer credit and review date on individual pages. Editorial authors write the content; a medical-review credit records a separate contribution and does not mean that every Selin article has been reviewed by Elena.

Meet Dr. Elena Vasilieva

Find your next read

Start with a guide if you want an explanation, or choose a calculator to work with your own dates. Each tool explains its method. The author directory introduces the writers credited across Selin.

A note about health information

Selin’s articles and web tools provide general education, not diagnosis or personal treatment advice. Calendar predictions cannot confirm ovulation and should not be relied on for contraception. If a change concerns you, a qualified healthcare professional can consider your symptoms and history; your own notes may help that conversation.