Gut Cure: How to Heal Your Microbiome and Reclaim Your Health from the Inside Out

Big Food now supplies over half of U.S. adults' at-home calories through ultraprocessed foods and, according to a study in The Lancet, these foods are now a major global health threat driving chronic disease The NOVA food classification groups foods by processing. Group 4 (ultraprocessed products) are industrial formulations that displace healthy diets and seriously harm health Across 104 studies, higher ultraprocessed food intake was consistently linked to poorer metabolic health, faster weight gain, diabetes, cardiovascular disease, cancer, and long-term exposure to harmful additives and endocrine-disrupting chemicals Most governments rely on weak, nutrient-focused policies and voluntary programs, while industry interference and trade challenges block stronger rules that reduce availability, marketing, and additives in ultraprocessed foods Transnational food giants shape laws, research, and public opinion to protect profits, so personal control starts with awareness, cleaning your pantry, smarter swaps, limiting vegetable oils, and strong social support

My newest book, "Gut Cure: Stop the Rot, Restore Your Body From the Inside Out," which comes out tomorrow, puts the spotlight on the modern epidemic of invisible gut dysfunction, and offers you a roadmap to true restoration Your gut microbiome acts as a command center for digestion, immunity, metabolism, and brain health; when microbial diversity drops, symptoms often go beyond digestion Short-chain fatty acids (SCFAs), especially butyrate, are essential compounds made by healthy gut bacteria that help repair your gut lining, calm inflammation, stabilize blood sugar, and support mental clarity Modern diets heavy in seed oils (including linoleic acid), emulsifiers, and ultraprocessed foods disrupt beneficial bacteria and reduce butyrate production, leaving your gut undernourished even if you eat "healthy" foods Simple changes, such as replacing seed oils with stable fats like butter, ghee, or coconut oil, can lower inflammation, rebalance your microbiome, and help your body begin healing from the inside out

Only one in four adults meets the recommended 150 minutes of weekly exercise, but even a few minutes of movement each day can still improve heart health, metabolism, and strength A single high-intensity workout session each week — just 30 minutes — is linked to a 39% lower risk of heart-related death in men and a 51% lower risk in women Short, intense efforts are more effective than long, drawn-out routines, and pushing past four high-intensity sessions per week offers no added benefits Activities like mopping floors, scrubbing counters, and gardening raise your heart rate enough to build strength and support metabolic health when done consistently Tools like walking pads, trampolines, jump ropes, and vibration plates offer low-cost, time-efficient ways to stay active — even while working or relaxing at home

Nearly half of U.S. adults have undiagnosed hypertension, which increases risks for stroke, heart attack, and early brain impairment due to reduced oxygen and nutrient delivery to neural tissue Early hypertension triggers rapid cellular damage, including endothelial aging, neuronal energy loss, myelin disruption, and blood-brain barrier leakage, all of which accelerate inflammation and cognitive decline even before symptoms appear Long-term high blood pressure leads to changes such as white matter hyperintensities, microbleeds, and brain volume loss. These findings are strongly linked to slower processing, stroke risk, and dementia Dementia risk rises with midlife hypertension, and older adults with high blood pressure show accelerated brain aging; regular monitoring beginning around age 40 helps reduce long-term cognitive decline Treatment can reverse some early damage, while lifestyle strategies such as diet changes, exercise, and better sleep significantly lower blood pressure and help protect long-term brain health

Leucine, an essential amino acid found in foods like grass fed beef, eggs, and dairy, triggers a cellular pathway that boosts mitochondrial performance and energy output New research from Nature Cell Biology shows leucine prevents the breakdown of key mitochondrial proteins, allowing your cells to generate more adenosine triphosphate (ATP) — the fuel that powers every function in your body The study revealed that leucine's effects appear within hours, not weeks, improving mitochondrial respiration and helping your cells burn fuel more efficiently Unlike other amino acids, leucine uniquely stabilizes the mitochondrial membrane, helping your body maintain energy balance, enhance endurance, and recover faster from stress or exertion Eating high-quality protein from whole foods supplies the leucine your cells need to keep mitochondria performing at their best, supporting steady energy, mental clarity, and resilience throughout the day

An animal study found that the smell of fatty foods during pregnancy and breastfeeding, even without eating them, can alter a child's brain development and make them more prone to obesity later in life Mice exposed to bacon-scented diets in the womb and through milk developed insulin resistance and gained more weight in adulthood, despite eating the same healthy diets as control mice The scent exposure rewired appetite and reward pathways in the brain, particularly affecting dopamine and AgRP neurons responsible for hunger regulation Researchers found 155 distinct odor molecules from fatty foods entering amniotic fluid and breast milk, directly shaping the offspring's sensory environment You can reduce your child's future risk of weight gain by managing food smells in your home, reducing inflammation, avoiding processed seed oils, and retraining your sense of smell with natural scents

Kimchi, a traditional Korean fermented vegetable dish, is rich in diverse lactic acid bacteria, bioactive compounds, and fibers that support gut integrity, microbial balance, immune signaling, and overall metabolic resilience A recent study published in npj Science of Food used single-cell RNA sequencing to map how daily kimchi intake influences immune cells, offering insight into food-driven changes in human immune regulation Their findings showed that kimchi strengthened key immune functions by helping cells recognize threats more effectively and supporting balanced T cell activity, without triggering overactive immune responses Beyond immune modulation, kimchi intake supports metabolic health, reduces body fat, improves cholesterol markers, nourishes the gut microbiome, strengthens the gut barrier, enhances digestion, and influences mood through gut-brain signaling Choosing raw, unpasteurized kimchi made with simple ingredients ensures you get the full benefit of its live cultures; homemade versions offer more control and better microbial diversity

Your circadian rhythm controls vital organ functions, including how your liver processes nutrients and filters toxins. Exposure to artificial blue light disrupts this rhythm, triggering a chain reaction that destabilizes liver health German researchers found that long-term artificial light exposure alters liver gene expression and melatonin production, contributing to the development and progression of fatty liver disease over time An earlier controlled animal study showed that constant light combined with a high-fat diet led to more weight gain, insulin resistance, and gut-derived liver inflammation than the same diet under normal lighting The circadian disruption caused by artificial light doesn't just affect the liver; it's linked to obesity, Type 2 diabetes, cardiovascular disease, hormone-driven cancers, and higher rates of depression and anxiety Simple steps like dimming household lights after sunset, wearing blue-blocking glasses in the evening, and limiting screen time at night can help realign your circadian rhythm and protect your liver

In a recent study, 71% of chronic fatigue syndrome (ME/CFS) patients tested had abnormal breathing patterns like hyperventilation or dysfunctional breathing, which were not seen in healthy controls Dysfunctional breathing was found in 42% of ME/CFS participants, leading to erratic, inefficient breathing during exertion, often without the person realizing it Low carbon dioxide (CO2) levels from overbreathing reduce oxygen delivery to muscles and the brain, worsening symptoms like brain fog, pain sensitivity, and exhaustion A simple breath-hold test helps identify poor CO2 tolerance, a key sign that your nervous system is stuck in "survival mode" and needs retraining Gentle breath retraining using nasal breathing, light breath holds, and CO2 awareness can improve energy, reduce dizziness, and calm the nervous system

Americans spend about nine hours sitting and nearly five hours on their phones daily, contributing to a sedentary way of life In a featured study presented at the Radiological Society of North America (RSNA), researchers found that muscle shape, not size, may reveal early metabolic changes and even signal disease risk The World Health Organization (WHO) advises getting at least 150 minutes of moderate activity or 75 minutes of vigorous activity each week. Yet many people fall short of these targets because inactivity significantly raises the risk of cardiovascular disease, Type 2 diabetes, and other cancers Long, unbroken sitting bouts are associated with circulation problems, back pain, brain fog, higher cancer risk, and an increased risk of Type 2 diabetes Shape yourself up for better health by standing more, walking whenever you can, eating a nutritious diet, and getting enough sleep and sunlight