Health library
Evidence-led guides on the upstream levers that shape how you feel: sleep, food, movement, stress, and the systems that clear your hormones.
- 27 guides
- 9 topics
- Every claim sourced
Foundation
The four upstream levers that shape almost everything else: sleep, food, movement and load.
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Your hormones are a readout, not a dial you turn Almost every hormone problem people try to fix directly is actually downstream of something simpler: sleep, food, movement, or load. Here is how to tell what you are actually looking at. - The night shift your hormones quietly depend on Most of the work that keeps your cycle running is scheduled while you are asleep. Short sleep does not just make you tired, it changes the timing of signals that only work on schedule.
- The protein gap almost nobody measures Most women eating carefully are eating less protein than they think, and the shortfall sits almost entirely at breakfast. Here is what it costs and how to close it without overhauling anything.
Gut and estrogen
How estrogen leaves your body, and why your gut can send some of it back.
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Why your gut can send estrogen back Estrogen your liver has carefully packaged for disposal can be unpacked in your intestine and reabsorbed. This is the loop behind a lot of heavy, uncomfortable premenstrual weeks. - Bloating that follows your cycle, and bloating that does not The single most useful thing you can know about bloating is whether it tracks your cycle or your meals. Those two patterns have different causes and completely different answers.
- The conversation between your gut and your mood Your gut and brain are wired together and talk constantly. That link is real, it is often oversold, and knowing which parts are solid tells you what is worth changing.
Liver and thyroid
The clearance work you never feel, and the ordinary things that slow it down.
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Your liver is doing hormone work you never see Estrogen does not just leave your body on its own. It gets dismantled in your liver, in two steps, and both steps can be slowed down by ordinary things. - What one drink actually costs your hormones Alcohol competes for the same liver capacity that clears your hormones, and it interrupts the sleep that schedules the rest. The number of drinking days matters more than the number of drinks.
- When it is your thyroid and not your cycle Thyroid disease and hormonal cycle problems produce almost identical symptoms, and women are frequently told it is the second when it is the first. Here is how the two differ and what to ask for.
Movement and metabolism
What training actually changes, and what gets wrongly blamed on age.
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Lifting weights changes far more than the shape of your arms Muscle is not decoration. It is the largest place your body stores blood sugar, and it is the only reason your bones bother staying dense. - Training with your cycle, without letting it run your life Cycle syncing is sold with far more confidence than the evidence supports. Here is what actually changes across the month, and the simpler method that works better.
- Your metabolism did not collapse at forty, and here is what did The story about a slowing metabolism is mostly wrong. What actually changed is muscle, daily movement and sleep, and only one of those is about age.
Heart, brain and bone
The risks that shift at menopause, and what protects you decades earlier.
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The heart risk that changes quietly when your periods stop Heart disease is the leading cause of death in women, and the risk curve bends upward around menopause. Here is what shifts, why it gets missed, and what actually moves the number. - Your bones were mostly built before you turned thirty Bone is living tissue that you spend your first three decades depositing and the rest of your life spending. Here is what sets the peak, what accelerates the loss, and what still works afterwards.
- Brain fog in perimenopause is real, and usually temporary The word-finding blanks and the lost thread mid-sentence are measurable, not imagined. Here is what drives them, how much is sleep, and how to tell this apart from something that needs investigating.
Hormone profiles and HRT
Working out which stage you are in, and how to think about treatment.
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Perimenopause or menopause: how to tell which one you are in One is a transition that can last a decade, the other is a single day you can only identify in hindsight. Knowing which you are in changes what to expect next. - How to think about hormone therapy without the noise Hormone therapy is neither the danger it was made out to be in 2002 nor the cure it is sold as now. Here is what it does, what it risks, and what the timing changes.
- PCOS without the panic: what the diagnosis actually means PCOS is not a cyst problem, it is not a punishment for how you have lived, and it is not one single condition. Here is what the diagnosis really says about you.
Libido and intimate health
Libido, pain and dryness, covered plainly and without euphemism.
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Low libido is rarely a problem with desire itself Wanting sex less is usually the sum of sleep, medication, pain, stress and context, not a single broken switch that testosterone can flip back on. - Sex that hurts is common, and almost all of it is treatable Painful sex has a short list of causes, and where the pain sits tells you most of what a clinician needs to know. Almost none of it requires living with it.
- The menopause symptom nobody warns you about, and it does not pass Vaginal dryness is one visible part of a whole condition that also affects the bladder, and unlike hot flushes it gets worse over time unless it is treated.
Connection and mental health
How stress reaches your cycle, and where mood ends and illness begins.
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How chronic stress reaches your cycle and quietly changes it A stressful week does nothing to your period. A stressful year can delay ovulation, shorten your luteal phase, or stop your cycle altogether, and the reason is energy rather than emotion. - When your mood follows a date rather than a reason Some low moods arrive on schedule. Knowing whether yours tracks your cycle, and how severely, changes what actually helps and who you need to see.
- Connection is a physical health input, not a soft one Loneliness shows up in blood pressure, sleep and immune function, and most women lose the structures that used to hold friendships together at exactly the age those things start to matter.
Your protocol
Turning all of it into something you will still be doing in six months.
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How to build a health protocol you will actually keep Most protocols fail on the fourth bad week, not in the first good one. Here is how to sequence changes, size them down and hold them long enough to know whether they worked. - What is worth tracking, and what is just noise Most of what you can measure about your body moves too much day to day to mean anything. A short list genuinely tells you something, and the rest quietly makes you anxious.
- The symptoms that need a doctor, not a habit change A calm, specific list of the signs that should send you to an appointment rather than to a new routine, plus how to prepare so you are actually heard.
How these guides are written
- Sourced, not asserted
Every guide carries at least ten references to named institutions, each with the date it was checked, so you can follow any claim back to where it came from.
- Plain language on purpose
Mechanisms are explained with everyday images rather than terminology. Where a term is genuinely useful, it is named once and translated.
- Honest about limits
Each guide says what is not known, and names the symptoms that need a doctor rather than a change of habit. Nothing here is a diagnosis.