Mammalian species can be grouped into 4 broad categories based on maturity at birth and milk composition, especially fat and protein content. These determine biologically normal feeding patterns and mothering styles. (1)

4 groups

*...

4 days ago

source

Topic #1. Mammalian Milk is Species Specific

Here we go! Each post is first in English, then followed by Spanish.

¡Aquí vamos! Cada publicación será primero en inglés, sequida de español. La versión en español se puede encontrar desplazándose hacia abajo en esta página.

It seems th...

5 days ago

source

Curriculum September 2026 - March 2027

The Lactation College on Substack is a reader-supported publication. To receive new posts and support this work, please consider becoming a free or paid subscriber.

Subscribe now

6 days ago

source

Key Facts

Contact Information

Newsletter Author

Number of Subscribers

Find out how many people subscribe to this newsletter.

Related Newsletters

Radical Moms Union

Evolve Lactation Media

Your Local Epidemiologist

Letters from an American

Breastfeeding Buzz

Optimal Nurturing

Audience Metrics

Subscribers, engagement, traffic and sponsorship for The Lactation College on Substack.

Subscribers		Engagement	80	Monthly Web Visits
Accepts Sponsors		Estimated Cost per Ad

Explore More

Top Health & Wellness Newsletters Top Substack Newsletters Browse All Newsletters

Chart Rankings

How this newsletter ranks in the official Substack charts.

#218	Substack /Health & Wellness(Free)
#200	Substack /Health & Wellness(Paid)

Authors

The writers behind this newsletter.

Barbara L. Philipp, MD

Pediatrician, Professor of Pediatrics, Educator, Writer - with first hand experience as a wife, mother of 3, and grandmother of 4. Breastfeeding is important, but it can be hard - I hope this helps.

Frequently Asked Questions

How can I access the email archive for The Lactation College on Substack?

You can find recent issues that have been published by The Lactation College on Substack on Reletter by scrolling up to where it says Latest Issues. Tap on the link for any of the most recent emails or hit More Issues to see older ones.

How many subscribers does The Lactation College on Substack have?

To see how many people subscribe to The Lactation College on Substack, simply upgrade your Reletter account. We provide readership numbers and lots of other stats for this newsletter so you can decide if it's worth reaching out to.

How can I advertise in The Lactation College on Substack?

Newsletter advertising can be extremely effective when it's done right. Before you pitch The Lactation College on Substack as a potential sponsor or partner, make sure that you've done your research and checked its newsletter stats with Reletter.

Then, personalize one of our winning pitching templates and send it to the right person using the contact info provided.

How much does it cost to sponsor a publication like The Lactation College on Substack?

Newsletter ad rates (or CPM) vary depending on many factors, including industry, number of subscribers, open rate, ad placement and more.

To find out how much an ad will cost, contact The Lactation College on Substack using the contact information provided and ask for a copy of their media kit.

How can I find newsletters related to The Lactation College on Substack?

Scroll up to where it says Related Newsletters to see other publications like The Lactation College on Substack. You can also search our email newsletter directory to discover other newsletters that cover the topics you're interested in.

How do I contact The Lactation College on Substack?

Reletter provides this newsletter's website URL above, where you will often find their contact information. We also provide links to associated social media accounts and pitching templates so you can reach out fast.