Weight regain after a GLP-1 drug is not inevitable, because the hunger that returns is best met by a nutrient dense, animal based diet and strength training started while you are still on the drug, ideally within a 3 to 6 month window at a low dose.

• What to do: Start shifting to a proper human diet now: fatty meat, eggs with the yolk, fish, avocado and broccoli, instead of ultra processed food made of wheat, rice, oats, corn, added sugar and seed oils. Lift heavy things and protect your protein intake.
• Why it matters: These drugs help you lose fat but also muscle, and most regain after stopping is fat tissue. If you ate the same junk food in smaller amounts, the old appetite returns and the weight comes back.
• How to apply it: Treat the medication as a tool for 3 to 6 months at a low dose, especially if BMI is above 35 or A1C is above 10. Use that window to build habits that you can keep for 30 to 60 years, not a temporary hack.
• Risks: No research shows higher doses or long term use are safe in humans. Coaches also warn about a blunted desire for food and other pleasures, and about the drugs masking an unhealthy relationship with food.
• Exceptions: Some people have a real medical reason to use these drugs, so the goal is to ask whether the drug is helping or hurting your long term health goals.

Sun protection accounts for about 80% of what you can influence in skin aging, so sunscreen by day, vitamin C in the morning and a retinoid at night beat any supplement, while acne, eczema and psoriasis often trace back to gut health, insulin and hormones.

• What to do: Wear sunscreen daily, use vitamin C in the morning and a retinoid at night, wash and moisturize, and add strength training, omega 3s and a whole food diet low in sugar and dairy.
• Why it matters: UV light is the number one extrinsic driver of skin aging, while sugar, insulin resistance, gut imbalance and falling estrogen add inflammation that breaks down collagen and worsens acne and psoriasis.
• How to apply it: Try a 2 to 3 week elimination of gluten, dairy, sugar and processed food for inflammatory skin problems, ask your doctor to check insulin, thyroid, vitamin D and gut health, and choose mineral sunscreen if chemical filters worry you.
• Metrics: Optimal fasting insulin is under 5, an omega 3 index above 8% is the goal, and the dermatologist says 65% of more than half a million Function Health members have high insulin.
• Tools: Retinol or tretinoin, topical vitamin C, niacinamide, copper peptides, urolithin A (Timeline Mitopure), omega 3s, collagen peptides and Function Health lab tests.
• Risks: Retinoids are not safe in pregnancy, lemon juice irritates skin, chemical sunscreens absorb more into the blood, and exosomes and injectable GHK Cu lack enough safety data.
• Exceptions: Gluten avoidance is strongest for people with positive gluten antibodies, and beef tallow is an overrated skincare trend.

Dr. Mark Hyman says the single most important immune step is raising vitamin D to about 45 to 60 instead of the lab cutoff of 30, citing a COVID study where people with low levels had 75% higher risk of hospitalization or death and those above 50 had zero deaths.

• What to do: Build the foundations first: whole foods, little sugar and ultraprocessed food, regular sleep, daily stress reduction, moderate exercise, and test your nutrient levels, especially vitamin D, instead of guessing.
• Why it matters: Sugar suppresses immune cell function and drives insulin resistance, and poor sleep, chronic stress and a troubled gut all weaken the immune system, so supplements cannot compensate for them.
• How to apply it: Take vitamin D after measuring your level (some people need 1,000 units, others 10,000), keep zinc and vitamin C adequate, cook chicken soup with ginger, garlic and astragalus, and at the first sign of illness rest, sauna, walk and take your stack.
• Metrics: Vitamin D target of 45 to 60 or 70, 60 to 80% of people are insufficient or deficient, and his own routine is 50,000 units each of vitamin A and D for 3 to 5 days at symptom onset.
• Tools: Function Health testing, Host Defense mushroom formulas, Transfer Factor Multi Immune, echinacea, zinc lozenges and a garlic, ginger, honey, lemon and red pepper drink.
• Risks: The 50,000 unit protocol and his use of thymosin alpha 1 and LL-37 peptides are personal choices he does not recommend to others.
• Exceptions: He skips the flu vaccine himself but recommends it for people with lung disease, heart failure, diabetes or higher risk, and asks for single dose vials to avoid thimerosal.

One cup of blueberries a day improves flow mediated dilation by about 1 to 1.5 percentage points, and each extra point is linked to roughly 12% fewer future cardiovascular events, while regular intake is tied to cognitive aging equal to being 1.5 to 2.5 years younger.

• What to do: Eat about one cup of whole fresh or frozen blueberries every day, ideally with a meal or in place of a refined carbohydrate dessert.
• Why it matters: Anthocyanins and the metabolites your gut microbes make from them act as signaling molecules that support nitric oxide, blood vessel function, memory, glucose handling and recovery after hard exercise.
• How to apply it: Add them to yogurt or oatmeal, eat them on their own, or blend them into a smoothie, and aim for a full cup because half a cup did not improve vascular function in a six month trial.
• Metrics: A cup a day improved flow mediated dilation by 1 to 1.5 points, one trial lowered arterial stiffness by 2.24 points, and in insulin resistant adults about two cups improved insulin sensitivity by 22% in one study.
• Risks: Evidence for blood sugar is mixed, since fasting glucose rarely drops and one 8 week replication attempt did not reproduce the insulin sensitivity gain.
• Exceptions: Blending with banana may reduce polyphenol exposure because banana polyphenol oxidase degrades chlorogenic acid and anthocyanins, so the speaker swaps banana for avocado, though no study has tested the effect on blueberry benefits.

When a weight loss shot cuts your meals from about 20 bites to 10 or 12, each bite has to carry more nutrition, and one or two bites of liver can match the nutrients in 20 or 30 bites of plant or grain foods.

• What to do: Start every meal with the densest foods first: eggs with the yolk, beef, sardines, salmon, liver, oysters or other shellfish, and plain full fat Greek yogurt or cottage cheese.
• Why it matters: The shots lower appetite and make food less enjoyable, so protein, vitamins, minerals and healthy fats are easy to undereat, which puts muscle, bone and brain function at risk.
• How to apply it: Eat 4 ounces of beef before touching anything else, start the day with one or two eggs, keep tinned sardines with the bones and skin on hand, and use unsweetened yogurt or cottage cheese when cooking smells make you nauseated.
• Tools: If you dislike liver, take 2, 4 or 6 Ancestral Supplements beef liver capsules a day, which the speaker compares to eating 1 to 3 ounces of liver.
• Risks: Filling a smaller stomach with bread, cookies, crackers and candy can lead to deficiencies and to losing muscle and bone along with fat.
• Exceptions: Chicken liver is the mildest option if beef liver is too strong, and goose or duck liver work as well.

A fasting insulin above 13 in a child signals hyperinsulinemia years before A1C rises, so a normal fasting glucose can hide type 2 diabetes that has already started, as incidence in ages 10 to 19 jumped from 2.37 to 22.3 per 100,000 between 2002 and 2023.

• What to do: Ask your pediatrician for an A1C and a fasting serum insulin if your child is overweight, has dark skin patches or has a family history of type 2 diabetes. Repeat the A1C at least once a year.
• Why it matters: Incidence grew 2.9% a year from 2002 to 2013 and 4.7% a year from 2014 to 2023. A child diagnosed young has decades to damage the heart, brain, kidneys and liver.
• How to apply it: Remove added sugar first, then slowly wean off cereal, bread, crackers, chips, cookies, pasta and fruit juice. Do not restrict portions or fast. Add meat, eggs and whole vegetables, and change the whole family's diet.
• Metrics: Healthy fasting insulin is about 3.9 in young children, about 5.0 before puberty, 7.2 in boys and 8.9 in girls near age 11, and never above 13. Treat an A1C rise of 0.1 or a fasting insulin of 15 to 17 as a red flag.
• Tools: Print the pediatric insulin studies from the show notes and bring your child's weight, glucose and family history to the visit.
• Risks: Prediabetes already harms small arteries, heart, brain, kidneys and liver, and normal fasting glucose can mislead the doctor.
• Exceptions: A very low fasting insulin can point to type 1 diabetes, which needs separate testing right away.

Calories fail to explain obesity because food quality changes your biology: resting energy expenditure fell about 220 calories per day since 2000 while intake stayed flat, and ultraprocessed food starves the microbiome that digests about 20 percent of your calories.

• What to do: Eat minimally processed, protective foods such as nuts, beans, fruit, seafood and fermented foods, and avoid foods you could not make in your kitchen. Strength train at least 3 times a week for 30 minutes.
• Why it matters: About 10,000 Americans die each week from poor nutrition, and only 6 percent of adults have optimal cardiometabolic health. Diet shifts the microbiome in days and glucose and blood pressure in weeks.
• How to apply it: Skip calorie counting and feed your gut with prebiotic, polyphenol and fiber rich foods. Choose protein from plants, seafood, yogurt or pasture finished meat, and use cold pressed oils when you can, though soybean and canola oils are fine for frying.
• Metrics: Ultraprocessed food is 50 to 60 percent of US calories. Microbiome share of calories is 20 percent on a healthy diet versus 2 percent on an ultraprocessed one. Most adults already eat enough protein.
• Tools: Omega-3 index testing, C15:0, magnesium and bone broth protein were mentioned as supplements or support.
• Risks: Processed meats are the worst protein source, and excess protein without training can be stored as fat.
• Exceptions: Older adults may need more protein because of anabolic resistance, and food as medicine is personalized by condition.

Science still cannot explain how brain matter produces conscious experience, and a theory backed by neuroscientist Antonio Damasio holds that the body feels before the cortex thinks, with signals like hunger or cold registered first in the brainstem.

• What to do: notice bodily signals before you translate them into language, like hunger or tension, instead of waiting for conscious thought to interpret them for you.
• Why it matters: the ego works as a defensive structure; awe, meditation or psychedelics can temporarily dissolve it and leave a lighter perspective on your own automatic reactions.
• How to apply it: if you want to understand your relationship with a substance like caffeine, try dropping it for a few weeks and watch what changes, instead of assuming its effects are just your normal baseline.
• Metrics: 90% of the world's adults consume caffeine daily, with documented cognitive and cardiovascular benefits up to about seven or eight cups.
• Risks: MDMA and psilocybin are approaching FDA approval for trauma and depression, but they are not suitable for people with a predisposition to psychosis or heart issues.