Fasting feeds Akkermansia, a gut bacterium that eats the intestinal mucus layer, and with no fiber or polyphenols competing for its attention it can overgrow and thin that lining, which fits a Swedish study of about 4,200 people linking high Akkermansia on a low fiber diet to higher type 2 diabetes odds.

• What to do: Stay in the Goldilocks zone. Pair fasting with polyphenol and resistant starch foods such as berries, apple peel and crucifers, and vary your foods instead of repeating the same ones every day.
• Why it matters: Biology follows a U shaped curve, so even a good thing like fasting can drift out of balance over time through accumulation, degradation, attenuation and compensation. Akkermansia is good in balance and harmful when it has only the gut lining to eat.
• How to apply it: Eat foraging style foods the day before a fast (berries, resistant starch, crucifers, lower protein), keep fasts shorter, and treat a small handful of berries during a fast as acceptable. Do not take probiotics daily as a rule. Consider a few weeks only after antibiotics.
• Metrics: About 20 types of mucin are produced in the body. Apple peel carries very long procyanidin chains of roughly 30,000 units. Count calories weekly if at all, not daily.
• Tools: Element 500 mg sodium cans, with 100 mg potassium and 30 mg magnesium, no sugar and no caffeine, sipped through a fast. A CGM and ketone monitor can show how small foods affect you.
• Risks: Repeated long fasts can trigger hyperphagia, a binge urge that grows with a big meal. Daily antioxidants may blunt useful signaling after exercise, and carnivore style diets can raise Akkermansia without fiber to balance it.
• Exceptions: Akkermansia works best when your levels are low. Older adults tend to have more Akkermansia but fewer Bifidobacteria, which can strain the immune system.

Brain scans of people who were overweight or obese looked about 8 years older, and low estrogen, testosterone or thyroid hormone also sped up brain aging, so fixing metabolism, hormones and nutrition can visibly restore brain structure.

• What to do: Treat the brain through the body. Track cardiometabolic health, hormones and nutrients, and add a brain MRI with quantitative analysis plus Alzheimer's blood markers when family history or age 50 to 60 makes them relevant.
• Why it matters: Brain changes can show up about 30 years before Alzheimer's, and around 60% of people diagnosed with dementia have cardiometabolic problems. Scans show recovery after nutrition is restored, as in anorexia, where the brain improved most.
• How to apply it: Get a broad blood panel that includes vitamin D, iron, omega 3, heavy metals, insulin, thyroid, sex hormones, homocysteine and methylmalonic acid, then retest after changes to see your trend.
• Metrics: Alzheimer's incidence doubles every 5 years after age 70, from about 5% at 70 to 10% at 75 and 20% at 80. One APOE4 copy roughly triples risk, and two copies (about 6% of people) raise it 9 to 10 times. Key markers include p tau 217, amyloid beta 42/40, neurofilament light and GFAP.
• Tools: Functional MRI, PET, NeuroQuant brain age and brain charts, plus the Function Health panel. Sponsors named in the episode: Bon Charge red light mask, Paleovalley bars, Timeline Mitopure, Seed DS 01, BiOptimizers magnesium and Fatty15.
• Risks: A single marker or a normal structural MRI can miss the problem, because many psychiatric conditions show up in function, not structure. Imaging is more controversial than blood work.
• Exceptions: Only about 2% of Alzheimer's cases are directly genetic. APOE4 tilts risk but is not destiny, and its effect varies by ancestry.

Almost everyone wakes between 1 and 3 a.m. because core body temperature starts rising again after dropping overnight, which moves you into lighter sleep, and what you do in the next few minutes decides whether you drift off or spiral.

• What to do: Skip the bathroom trip unless you truly need it (roll onto your back and count to 20 first), do not check the clock or phone, and start 4 7 8 breathing for 20 cycles.
• Why it matters: Falling asleep needs lower anxiety, temperature and heart rate. Standing up, doing clock math and forcing sleep raises all three, and a heart rate above about 60 makes unconsciousness hard.
• How to apply it: Breathe in for 4, hold for 7 and push out for 8, keeping the exhale longer than the hold. Track cycles by raising a finger each round. Build up with 4 5 6, then 4 6 7, over about a week. If you still cannot sleep, read a boring book in a set chair and return to bed when your eyes feel heavy.
• Metrics: Wake at the same time 7 days a week, because morning light sets melatonin to turn on roughly 14 hours later. Use the 3 2 1 rule: stop food and fluids 3 hours before bed, work 2 hours before, screens 1 hour before.
• Tools: LMNT electrolytes in the morning and an Oura ring to follow weekly trends, not nightly numbers. Counting backward from 300 by threes can also quiet a racing mind.
• Risks: Mouth taping can mask undiagnosed sleep apnea, especially after alcohol. Constantly checking trackers can cause orthosomnia, which is anxiety about sleep data.
• Exceptions: If you truly need to pee, go. If you feel electricity in your body like jet lag, that may be a body clock issue rather than a racing mind.

Plaque biofilm that your toothbrush cannot reach hardens into tartar, and that step turns bleeding gums into periodontal disease, an infection that can destroy the bone holding your teeth in place.

• What to do: Clean between your teeth every day with floss, floss picks, interdental brushes or a water flosser. The method matters less than doing it.
• Why it matters: Gum disease is linked with heart disease, diabetes and chronic kidney disease. Diabetes and gum disease affect each other in both directions, so poor gums can make blood sugar harder to control.
• How to apply it: If you have not flossed consistently, start today, because there is always a point in starting. If your gums bleed, keep cleaning gently. Bleeding is usually a sign they need more consistent cleaning, not less.
• Metrics: The progression runs from plaque to gingivitis (red, swollen, tender, bleeding gums) to tartar, then to periodontal disease and, in advanced cases, tooth loss.
• Tools: String floss, floss picks, interdental brushes and water flossers all disrupt the biofilm between teeth.
• Risks: Tartar is hardened plaque attached to the tooth, and neither brushing nor flossing removes it. Only a dental professional can.
• Exceptions: Persistent bleeding can have other causes, so talk to your dental provider. If you have not had a professional cleaning in a while, book one, then restart your routine.

Bone mineral density predicts only about 70% of fracture risk because a two-dimensional DEXA misses bone shape, and lifting challenging loads can thicken the femoral neck cortex even when hip density barely changes.

• What to do: Do two strength sessions a week built on a squat, hinge, push, pull and carry, add balance moves and keep up daily activity such as walking, dancing or shoveling.
• Why it matters: Bone mass peaks in your 20s and about 5% of the skeleton is remodeled every year, so the goal after 65 is to hold on to bone and prevent falls.
• How to apply it: Use 8 to 12 repetitions, pick difficulty rather than maximum weight, try walking lunges and step-ups, and add a few sets of 10 to 12 small hops if your joints allow.
• Metrics: BMD explains about 70% of fracture risk, FRAX estimates 10 year fracture probability, and CTX and P1NP track bone resorption and formation.
• Tools: DEXA with 3D hip analysis, FRAX, a machine circuit for beginners, Function Health tests, Prolon and Momentous creatine appear in the episode.
• Risks: Calling an X-ray bone on bone can scare people away from exercise, and heavy loads with poor form raise injury risk for beginners.
• Exceptions: For someone using a walker with severe arthritis, the goal is function and fall prevention, not bone density.

Yes, you can be insulin resistant with normal blood sugar, because glucose is the last marker to rise while fasting insulin climbs first, and a fasting insulin under 5 is the target almost nobody tests.

• What to do: Ask for fasting insulin, hemoglobin A1C and fasting glucose, then check your waist to hip ratio and body composition instead of trusting glucose alone.
• Why it matters: One patient had glucose under 110 after two colas worth of sugar yet an insulin near 300, and doctors who test only glucose miss many cases.
• How to apply it: Cut starch and sugar, eat protein, fat and 30 grams of fiber, walk 10 to 20 minutes after meals, lift weights, sleep well and fast 12 to 14 hours overnight.
• Metrics: Fasting glucose 70 to 90, fasting insulin under 5, A1C about 5.0 to 5.2, post meal glucose under 110 to 120, waist to hip ratio under 0.8 for men and 0.9 for women.
• Tools: Function Health tests with an insulin resistance score from 0 to 100, a continuous glucose monitor for a few weeks and a tape measure.
• Risks: Statins, sleep apnea, chronic stress and artificial sweeteners can worsen insulin resistance or cravings.
• Exceptions: A glucose spike after eating is normal, and thin people can still carry hidden fat, so body composition matters more than weight.

Nano fat injected under the eyes thickened thin skin and hid visible blood vessels within about four months, and it beat a CO2 laser and PRP because it rebuilds tissue quality instead of just filling a hollow.

• What to do: Name your main problem before buying anything: pigment, visible vessels, hollowness, temporary puffiness, a structural bag or thin crepey skin. Most people have more than one.
• Why it matters: Skin care can improve hydration, collagen support and pigment, but it cannot fill a tear trough or remove a fat pad. Asking a cream to do surgery work wastes hundreds or thousands of dollars.
• How to apply it: Use hydrating, brightening skin care around the eyes, keep filler very conservative, and consider a clinic procedure only when you keep thinking about the problem and the treatment matches its cause.
• Metrics: PRP and PRF needed repeat sessions every 3 to 4 months. The fat transfer took about 4.5 hours under local anesthesia, and roughly 50% of micro fat can be reabsorbed. Visible improvement appeared around month 3 and was clear at month 4.
• Tools: Major Fade Hyper Serum for hydration, antioxidants and brightening, plus Major Fade Active Seal for vitamin C, glutathione and peptides.
• Risks: Too much hyaluronic acid filler attracts water and looks puffy, heavy or more tired. Fat transfer is real surgery with soreness at the donor site, and it is not a yearly procedure.
• Exceptions: A true under eye bag or severe hollowness may need surgery, and Botox cannot replace lost volume.

A controlled trial where all food was provided showed that a high protein, low carbohydrate diet cut liver fat by 67 percent, about three times more than two other diets, yet ketones were only 0.5 mmol per liter, so protein and carbohydrate restriction, not ketosis, did the work.

• What to do: Raise protein to about 35 grams per meal, pick chicken, fish, tofu and legumes, and keep carbohydrate portions small.
• Why it matters: About one in three adults has fatty liver, and ApoB fell on all three diets once participants lost about 10 percent of their weight.
• How to apply it: Cook with olive, sunflower or rapeseed oil, eat about 25 grams of nuts and 30 grams of fiber daily, and add vegetables to every meal.
• Metrics: 67 percent less liver fat, 23 percent of energy from saturated fat, 0.5 mmol per liter of ketones, apoB, HbA1c and fasting glucose.
• Tools: Eight Sleep Pod 6 for sleep temperature, Function Health lab panels, IM8 multinutrient, Momentous creatine.
• Risks: Saturated fat from butter, cream or coconut oil has no nutritional upside and can raise LDL once weight stabilizes.
• Exceptions: The trial could not isolate saturated fat, did not report vascular function and did not find different glucose tolerance across diets.

A registered dental hygienist names four 2026 favorites they use and recommend to patients: the Quip Rev oscillating toothbrush, GUM Professional Clean floss picks, Sensodyne Clinical Repair toothpaste and the Quip rechargeable cordless water flosser.

• What to do: Choose an affordable oscillating toothbrush, durable floss picks that do not fray and a sensitivity toothpaste with enamel remineralization, then add a water flosser if you want extra cleaning.
• Why it matters: Technique decides results. Guide an electric brush slowly from tooth to tooth and never scrub, and floss by hugging the tooth up and down on each side.
• How to apply it: Subscribe to brush head refills every 3 months, keep floss picks in your bag, car and desk, and start the water flosser on its gentle mode before moving to deep clean pressure.
• Tools: Quip Rev, GUM Professional Clean Floss Picks, Sensodyne Clinical Repair and the Quip water flosser.
• Risks: The Sensodyne version they use contains SLS, which can irritate some mouths. Check the label for an SLS-free option if you have irritation.
• Exceptions: Sensodyne costs more than some pastes, and the water flosser category is crowded, so compare options if budget matters.

Humans are far more olfactory than they admit: after a handshake people sniff their own hands, and invisible body odor can predict friendship, spread fear and cut men's free testosterone by about 14% within 20 to 30 minutes.

• What to do: Treat smell as a real social channel. Notice the hand-to-face sniffing that follows handshakes and give some weight to first impressions that "just click", because odor similarity predicted how friendly strangers rated each other.
• Why it matters: About 7 million receptors of roughly 350 types feed the olfactory bulb, which connects directly to the amygdala and hypothalamus, so odor can shift arousal, aggression and hormones without conscious awareness.
• How to apply it: Read "pheromone" claims with caution and use the term chemosignals instead. Remember that baby odor (hexadecanal) lowered aggression in men but raised it in women, so the same signal does not act the same way in everyone.
• Metrics: 14% drop in free testosterone after sniffing tears; 15 of 16 people identified digitized violets; a perceptual map of 4,000 molecules.
• Tools: Electronic nose with metal oxide sensors, the Taylor Aggression Paradigm and fMRI.
• Risks: Smell digitization is at the "1956 black and white TV" stage; rose and anise recreations failed, so do not expect products from it soon.
• Exceptions: Odor similarity predicted friendship ratings but not performance in the mirror game, and the tear effect was shown for men sniffing women's tears.