
Dr. Casey Means' "Good Energy" revolutionizes health by unveiling the metabolic roots of chronic disease. Endorsed by Dr. David Perlmutter as "game-changing," this four-week roadmap connects cellular health to spiritual wellness. Could understanding your mitochondria be the missing key to vibrant living?
Dr. Casey Means, Stanford-trained physician and New York Times bestselling author of Good Energy: The Surprising Connection Between Metabolism and Limitless Health, is a leading voice in metabolic health and preventive medicine. A co-founder of Levels—a health technology company pioneering real-time metabolic monitoring—she bridges cutting-edge science with practical strategies for reversing chronic disease through nutrition and lifestyle changes. Her work, rooted in functional medicine principles, challenges conventional healthcare paradigms by emphasizing root-cause solutions over symptom management.
Means’ insights stem from her clinical training at Stanford Medical School and her decision to leave traditional surgery to address systemic gaps in chronic disease prevention. She regularly contributes to The Wall Street Journal and Forbes, and her appearances on The Joe Rogan Experience and Tucker Carlson Today have amplified her message to millions. Her newsletter and active social media channels (@drcaseyskitchen) offer science-backed health optimization tools.
Good Energy debuted as a #1 New York Times bestseller, cementing Means’ role as a trusted authority in the metabolic health movement. The book’s actionable framework has influenced policy discussions, including advisory roles in national health initiatives.
Good Energy explores how metabolic dysfunction—the body’s inability to efficiently convert food into energy—underlies chronic diseases like diabetes, heart disease, and anxiety. Dr. Casey Means argues that optimizing cellular energy production through diet, sleep, stress management, and environmental adjustments can prevent and reverse these conditions. The book combines scientific research, patient stories, and practical strategies, including a four-week plan and recipes.
This book is ideal for individuals seeking to address chronic health issues holistically, those interested in preventive medicine, or anyone curious about metabolic health. It’s particularly valuable for readers who prefer actionable advice over symptom management, offering tools like biomarker tracking, dietary guidelines, and lifestyle tweaks.
Key ideas include:
Unlike symptom-focused approaches, Good Energy targets root causes by linking chronic diseases to cellular energy production. It emphasizes self-monitoring through wearable tech and lab tests, and rejects one-size-fits-all diets in favor of metabolic flexibility principles.
Dr. Means suggests:
The book identifies five critical biomarkers: blood glucose, insulin sensitivity, inflammation markers (e.g., CRP), lipid profiles, and mitochondrial function. Optimal ranges for these indicators are detailed alongside guidance on testing and interpretation.
Yes, it provides 30 metabolism-supportive recipes focused on whole foods, healthy fats, and low glycemic ingredients. Examples include nutrient-dense salads, protein-rich dishes, and snacks designed to stabilize energy levels.
Dr. Means critiques conventional medicine’s focus on symptom management over root causes. She advocates for patient empowerment through self-tracking and lifestyle changes, highlighting cases where metabolic interventions resolved chronic issues like migraines and infertility.
Mitochondria are framed as the “powerhouses” driving cellular energy. Dysfunctional mitochondria—impacted by poor diet, toxins, or stress—produce “bad energy,” leading to disease. The book offers strategies to enhance mitochondrial efficiency, such as antioxidant-rich diets and reducing oxidative stress.
Yes, by addressing insulin resistance and inflammation—key metabolic drivers of weight gain. The book advocates for low-sugar diets, strength training, and improved sleep to regulate hormones like leptin and ghrelin.
Dr. Means suggests continuous glucose monitors (CGMs), at-home blood test kits, and wearable devices to track sleep and activity. These tools help users identify personal triggers for metabolic dysfunction and measure progress.
It links anxiety and depression to metabolic imbalances, such as insulin resistance and gut inflammation. Strategies like anti-inflammatory diets, sunlight exposure, and mindfulness are proposed to support both brain and metabolic health.
Yes, it cites over 1,000 studies linking metabolic health to chronic diseases. Dr. Means also integrates data from her work at Levels, a metabolic health company, showing real-world impacts of lifestyle interventions.
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These connections aren't coincidental-they're causal.
Our children are experiencing an unprecedented metabolic health crisis.
The medical system is structured around financial incentives.
Americans continue getting sicker.
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Imagine your daily fatigue, anxiety, skin issues, and digestive problems aren't random annoyances but connected warning signals from your body's most fundamental systems. This revolutionary perspective explains why American life expectancy is declining for the longest period since the Civil War era, with 60% of adults battling chronic illness and 93% showing signs of metabolic dysfunction. When our cells can't produce energy efficiently, organs and systems begin to fail, creating a cascade effect: bad energy leads to broken cells, broken organs, and ultimately broken bodies. The modern environment has created a perfect storm for this dysfunction. We consume 3,000% more sugar than a century ago, work sedentary jobs, sleep 25% less than our ancestors, and face exposure to over 80,000 synthetic chemicals. Our medical system compounds the problem by treating each symptom as a separate condition requiring different specialists and medications, missing the common thread running through seemingly unrelated disorders. Consider how IBS patients are twice as likely to have metabolic syndrome, or how depression connects to metabolic health - the brain consumes 20% of our energy despite being only 2% of body weight, making it exquisitely sensitive to energy disruption. Even hearing loss shows strong metabolic connections, with 42% of people with elevated fasting glucose experiencing high-frequency hearing impairment versus just 24% with normal levels. Our children are experiencing an unprecedented metabolic health crisis that we've dangerously normalized. Childhood obesity has tripled since the 1970s, rising from 5% to over 18%. Nonalcoholic fatty liver disease, first reported in children in 1983, now affects up to 20% of all children and 80% of obese children. In Hispanic young men ages 25-30, the rate reaches a shocking 42%. Mental health issues have reached epidemic proportions as well. About 20% of children have an identified mental health condition in any given year, with 40% meeting criteria for mental health disorders by age eighteen. Between 2016-2020 alone, anxiety and depression diagnoses increased by 29% and 27% respectively. These connections aren't coincidental - they're causal. By understanding how cellular energy production affects every system in our body, we can begin to see health not as a collection of isolated symptoms but as an integrated whole dependent on our cells' ability to generate good energy.