Progesterone and Adrenaline: Calm vs. Fight or Flight

A light-toned medical illustration on a parchment-style background depicting the hormonal balance between progesterone and adrenaline. The left side features soft blue neural pathways and a brain labeled "Progesterone: Calm & Relaxation." The right side shows warm orange energy lines and adrenal glands labeled "Adrenaline: Fight-or-Flight." A central yin-yang symbol connects the two sides, illustrating a state of equilibrium.

What comes to mind when you think of stress? For most of us, it’s adrenaline — the hormone that primes our body for “fight or flight,” increasing heart rate and sharpening our senses. But what counterbalances this powerful system? The answer, lies in an unexpected source: progesterone. This article explores the fascinating science of how progesterone and adrenaline interact, creating a dynamic interplay that affects mood, anxiety, and overall resilience.

Read more

What Is Sex Hormone–Binding Globulin (SHBG)?

SHBG-mechanism-of-action

Sex hormone–binding globulin (SHBG) is a protein made mainly in the liver. It binds strongly to key sex hormones like testosterone, dihydrotestosterone (DHT), and estradiol. By doing so, SHBG controls how much of these hormones stay “free” (unbound) and biologically active in the body. Think of SHBG as a gatekeeper: it influences how much hormone is available to tissues in both men and women.

Read more

Women and the Crisis in Sex Hormones

“Women and the Crisis in Sex Hormones” by Barbara Seaman is a bold 1987 critique of synthetic hormone therapies, including the birth control pill and menopause treatments, exposing their risks and the medical industry’s profit-driven oversights. Book Overview Seaman warns of dangers like blood clots, strokes, heart attacks, and cancers from high-dose estrogens, urging women … Read more

5β-Reductase (AKR1D1): Hormone Off-Switch & Digestion Hero

A middle aged woman in front of a table of healthy fruits and vegetables, off to the right is a illustration of a liver and a diagram explaining how it interacts with five beta reductase

Imagine your hormones as messengers racing through your body, delivering important signals. But what happens when they stick around too long? Enter 5β-reductase, a hardworking liver enzyme that acts like a gentle “off-switch,” calming down hormones like progesterone, testosterone, and cortisol while powering up the bile that helps you digest fats. This unsung hero keeps your hormone levels balanced and your digestion smooth—yet most people have never heard of it.[journals.plos]​

Read more

Everything Estrogen Made Easy – A Must-Read If You’re Battling Estrogen Dominance

If you’re stuck in that frustrating loop of “normal” thyroid labs, constant low energy, digestive issues, mood swings, or just feeling like your metabolism is in slow motion—and you’ve got a sneaking suspicion estrogen is playing a bigger role than anyone admits—then Everything Estrogen Made Easy by DanM@CowsEatGrass is hands-down one of the best resources … Read more