Index

35 words that show up in the log. Short definitions, no mythology. If a term has a piece behind it, the name links through.

ApoB

Apolipoprotein B. One particle, one ApoB. A better count of atherogenic lipoproteins than LDL-C alone when the two disagree.

Autophagy

Cells breaking down worn-out parts and recycling them. Fasting is one trigger. The word gets used as a spell. The biology is slower and less cinematic than Instagram.

Biological age

How old tissues look compared with your birthday. DNA methylation clocks are the serious attempt. A four-question quiz on this site is a lifestyle score, not that clock.

Blood pressure (home)

The number you get after sitting quietly with a cuff that fits. Pharmacy kiosks and talking through the measurement both lie in different directions.

Caffeine half-life

How long until half the dose is gone. Average is roughly five hours, with a wide genetic spread. Afternoon coffee can still be on board at lights-out.

Collagen peptides

Hydrolyzed collagen sold as a legal food ingredient. Not the same object as grey-market injectable 'research peptides.'

Compounding

A pharmacy making a preparation for a specific patient under rules that are not a blank check. Bulk wellness peptides have been a regulatory fight, not a loophole to celebrate.

CYP1A2

A liver enzyme that helps clear caffeine. Slow vs fast versions are one reason two men can drink the same espresso and have different nights.

Epigenetics

Which genes are turned up or down without changing the DNA letters. Age, sleep, food, and illness leave marks. A consumer clock is not a full map.

Ferritin

Iron storage protein in blood. Low can mean empty stores. High can mean overload or inflammation. Men skip this test. They should not.

Grip strength

A crude capacity marker that tracks with mortality in cohort studies. It is not a personality. It is also not a reason to skip a deadlift.

HbA1c

Glycated hemoglobin. A roughly three-month look at glucose. 'I feel fine' is not a substitute. Interpretation belongs with a clinician if it is off.

Hemochromatosis

Iron overload, often genetic (HFE variants). Early symptoms look like being tired at 47. Treatment in real disease can include therapeutic phlebotomy, not a forum stack.

Hip hinge

The pattern of a deadlift, kettlebell swing, or Romanian deadlift: hips back, spine roughly neutral, load on the posterior chain. After 40 this is furniture, not a party trick.

Hormesis

A small dose of something unpleasant (heat, cold, lifting) that can make you more robust. A large dose of the same thing just injures you.

HRV

Heart rate variability. A noisy overnight number. Useful as a trend if you sleep like a person. Useless as a daily moral score.

Lifestyle score

The 0 to 100 quiz on this site from sleep, training, food, and stress. Not biological age. Not a diagnosis.

Magnesium oxide

A cheap salt with poor absorption and a reputation as a laxative. If you are supplementing magnesium, the form on the label matters more than the milligram brag.

mTOR

A growth switch in cells. You want it on after training and protein. You do not want it stuck on all day via constant snacking.

NAD+

A helper molecule cells use for energy and repair. Levels fall with age. Whether NMN or NR pills restore anything that matters in humans is still argued in clinics, not settled on Amazon.

Nootropic

A substance taken to think more clearly. Caffeine counts. Most of the rest of the shelf is marketing with a PubMed link taped on.

Omega-3 index

The share of EPA and DHA in red-cell membranes. A blood test. The milligrams on a bottle are not that test.

Postprandial walk

Ten to fifteen minutes on your feet after a meal. One of the cheaper ways to blunt a glucose spike. Not a substitute for medication you were prescribed.

Research chemical

A seller label that usually means 'not approved as a medicine.' Combined with injection advice on the same page, it is a loophole, not a safety feature.

Resting heart rate

Beats per minute when you have been still. Morning trend is more useful than one panicked reading after coffee.

Rucking

Walking with a weighted pack. Useful loaded walking if you progress like a grown-up. A recipe for a cranky back if you jump to 20 kg on day one.

Senolytic

Something meant to clear senescent cells. Animal data is interesting. Buying a bottle does not enroll you in a trial.

Sirtuins

Proteins involved in DNA repair and stress responses. They need NAD+ to work, which is why the NAD conversation never dies.

Sleep apnea

Repeated airway collapse in sleep. Snoring is a clue, not the disease. Screening questions can flag risk. Diagnosis is a sleep study, not a blog.

STOP-BANG

An eight-item screening questionnaire for obstructive sleep apnea risk. High scores mean talk to a clinician. They do not mean you diagnosed yourself.

Telomeres

Caps on chromosomes. They shorten as cells divide. A short telomere is a marker, not a thing you hack with a powder.