HOMA calculator: https://www.omnicalculator.com/health… Papers referenced in the video: Growth hormone-releasing hormone disruption extends lifespan and regulates response to caloric restriction in mice https://pubmed.ncbi.nlm.nih.gov/24175… Glucose regulation and oxidative stress in healthy centenarians https://pubmed.ncbi.nlm.nih.gov/12543… Distribution of blood glucose and prevalence of diabetes among centenarians and oldest-old in China: based on the China […]
For those who track their diet, eating only the RDA for many nutrients may not optimize health. For example, the RDA for selenium is 55 micrograms per day, but is that amount optimal for reducing risk of death for all causes?
Papers referenced in the video: Sirtuins, Healthspan, and Longevity in Mammals https://www.sciencedirect.com/science… Sirt1 extends life span and delays aging in mice through the regulation of Nk2 homeobox 1 in the DMH and LH https://pubmed.ncbi.nlm.nih.gov/24011… Resveratrol improves health and survival of mice on a high-calorie diet https://pubmed.ncbi.nlm.nih.gov/17086… Rapamycin, But Not Resveratrol […]
Papers referenced in the video: FGF21 and Chronic Kidney Disease: https://www.sciencedirect.com/science… The starvation hormone, fibroblast growth factor-21, extends lifespan in mice: https://www.ncbi.nlm.nih.gov/pmc/arti… Inhibition of growth hormone signaling by the fasting-induced hormone FGF21: https://pubmed.ncbi.nlm.nih.gov/18585… Alpha-Ketoglutarate, an Endogenous Metabolite, Extends Lifespan and Compresses Morbidity in Aging Mice: https://pubmed.ncbi.nlm.nih.gov/32877… Berberine ameliorates cellular senescence […]
Papers referenced in the video: Therapeutic Potential of NAD-Boosting Molecules: The In Vivo Evidence: https://pubmed.ncbi.nlm.nih.gov/29514… NAD and the aging process: Role in life, death and everything in between: https://pubmed.ncbi.nlm.nih.gov/27825… Flavonoids as inhibitors of human CD38: https://pubmed.ncbi.nlm.nih.gov/21641… Flavonoid apigenin is an inhibitor of the NAD+ ase CD38: implications for cellular NAD+ […]
Papers referenced in the video: Remnant Cholesterol and Atherosclerotic Cardiovascular Disease Risk: https://www.jacc.org/doi/10.1016/j.ja… The effect of adiponectin in the pathogenesis of non-alcoholic fatty liver disease (NAFLD) and the potential role of polyphenols in the modulation of adiponectin signaling: https://www.sciencedirect.com/science… Joint distribution of lipoprotein cholesterol classes. The Framingham study: https://pubmed.ncbi.nlm.nih.gov/6573877/ Long-term […]
Papers referenced in the video: Bacteria Boost Mammalian Host NAD Metabolism by Engaging the Deamidated Biosynthesis Pathway: https://pubmed.ncbi.nlm.nih.gov/32130… Comparison of the effects of nicotinic acid and nicotinamide degradation on plasma betaine and choline levels: https://pubmed.ncbi.nlm.nih.gov/27567… Total plasma homocysteine and cardiovascular risk profile. The Hordaland Homocysteine Study: https://pubmed.ncbi.nlm.nih.gov/7474221/ Total plasma homocysteine values among elderly […]
Paper references for Levine’s Phenotypic Age calculator and aging.ai: An epigenetic biomarker of aging for lifespan and healthspan: https://pubmed.ncbi.nlm.nih.gov/29676… Population Specific Biomarkers of Human Aging: A Big Data Study Using South Korean, Canadian, and Eastern European Patient Populations: https://pubmed.ncbi.nlm.nih.gov/29340…
Papers referenced in the video: Dietary Thiols: A Potential Supporting Strategy against Oxidative Stress in Heart Failure and Muscular Damage during Sports Activity: https://www.ncbi.nlm.nih.gov/pmc/arti… Ergothioneine levels in an elderly population decrease with age and incidence of cognitive decline; a risk factor for neurodegeneration? https://pubmed.ncbi.nlm.nih.gov/27444… Is ergothioneine a ‘longevity vitamin’ limited […]
Papers referenced int the video: Deficient synthesis of glutathione underlies oxidative stress in aging and can be corrected by dietary cysteine and glycine supplementation: https://pubmed.ncbi.nlm.nih.gov/21795… Glycine and N-acetylcysteine (GlyNAC) supplementation in older adults improves glutathione deficiency, oxidative stress, mitochondrial dysfunction, inflammation, insulin resistance, endothelial dysfunction, genotoxicity, muscle strength, and cognition: […]
Papers referenced in the video: Bacteria Boost Mammalian Host NAD Metabolism by Engaging the Deamidated Biosynthesis Pathway: https://pubmed.ncbi.nlm.nih.gov/32130883/ CD38 Dictates Age-Related NAD Decline and Mitochondrial Dysfunction through an SIRT3-Dependent Mechanism: https://pubmed.ncbi.nlm.nih.gov/27304511/ Aerobic and resistance exercise training reverses age-dependent decline in NAD + salvage capacity in human skeletal muscle: https://pubmed.ncbi.nlm.nih.gov/31207144/
Papers referenced in the video: The Hallmarks of Aging: https://www.ncbi.nlm.nih.gov/pmc/arti… Telomere Length as a Marker of Biological Age: State-of-the-Art, Open Issues, and Future Perspectives: https://www.ncbi.nlm.nih.gov/pmc/arti… Telomeres and the natural lifespan limit in humans: https://www.ncbi.nlm.nih.gov/pmc/arti… Telomere Length and All-Cause Mortality: A Meta-analysis: https://pubmed.ncbi.nlm.nih.gov/30254… Comparability of biological aging measures in the National […]
In November 2020, I made a HDL video based on a meta-analysis in ~3.4 million subjects that was published in July 2020. In Dec 2020, a larger study (n=15.8 million subjects) was published-those data are presented in the video, and compared against the meta-analysis. In addition, I’ve tested my HDL […]
Papers referenced in the video: DNA methylation GrimAge strongly predicts lifespan and healthspan: https://pubmed.ncbi.nlm.nih.gov/30669… GrimAge outperforms other epigenetic clocks in the prediction of age-related clinical phenotypes and all-cause mortality: https://pubmed.ncbi.nlm.nih.gov/33211… Dietary intake and blood concentrations of antioxidants and the risk of cardiovascular disease, total cancer, and all-cause mortality: a systematic […]
Results for my first blood test in 2021 are in-what’s my biological age, and how am I optimizing it? If you’re interested in calculating your biological age, the spreadsheet is included as an Excel file in this link:
Red blood cells (RBC) are the most abundant cell type in the human body. I’ve tracked my RBC levels in conjunction with diet since 2015, and with the goal of reversing the age-related decline for RBCs, which dietary components have the strongest correlation with RBCs? https://www.youtube.com/watch?v=3JpyDiNxNeE&feature=youtu.be
Discussed in the video: Data for changes in kidney function during aging, kidney function values that are associated with an increased risk of death for all causes What’s my data for kidney function, 2006 – 2020? Can diet impact kidney function? Within my data, which foods are correlated with good […]
The Hallmarks of Aging are well established, but what is less discussed is the impact of microbes. Viruses, including SARS-CoV-2 and HSV-1 cause mitochondrial dysfunction-more specifically, they cause mitochondria to release some of their DNA, which triggers antiviral immunity. When considering that blood levels of mitochondrial DNA increase during aging, […]
The maximal reduction for biological age when using the biological age calculator, Phenotypic Age, is ~20 years. In other words, if I’m 80 years old and my biomarkers are all reflective of youth, the lowest possible biological age will be ~60 years old. One reason for that is the inclusion […]
In an earlier video, I presented data for apigenin’s ability to increase levels of NAD+. In addition to apigenin’s impact on NAD+, apigenin supplementation increases muscle mass, strength, and treadmill running distance in both young and old mice. Video link for NAD+ is increased in response to apigenin: https://youtu.be/5-2YoGctcCk?list=UUT… Paper […]
Here’s the first interview clip (of a series) with Modern Healthspan on YouTube where we discuss the role of the microbiome on health and longevity: Part II: Skin, Oral Microbiome & Immune System Part III: Optimal Health with Soluble Fiber Part IV – Microbial Burden & Hallmarks of Aging Part […]
Discussed in the video: What’s my biological age on blood test #6 in 2020? What’s my average biological age for 2020, and how does it compare with 2019? Are there links between calorie intake, cardiovascular fitness (RHR, HRV), and diet composition with my biological age?
The Hallmarks of Aging are well established, but what is less discussed is the impact of microbes and/or microbial products. The bacterial metabolite, LPS, increases during aging, and it negatively impacts mitochondrial function, thereby demonstrating a role for microbial products on one of the Hallmarks of Aging, mitochondrial dysfunction.
Here’s a recent interview where we discussed my journey from an undergraduate student that was interested in aging to scientist!
LDL is arguably the most debated biomarker in terms of what’s optimal for health. In the video, I present data showing that 100 – 140, not 50 – 70 mg/dL may be optimal in terms of minimizing disease risk and maximizing longevity.
White blood cells (WBCs) comprise many different cell types, including neutrophils, lymphocytes, monocytes, eosinophils, and basophils. Neutrophils, lymphocytes, and monocytes account for ~99% of WBCs, and accordingly, in the video I propose optimal ranges for these cell types in terms of health and longevity.
Here’s an interview that I did with Richard at Modern Healthspan, one of the best interviewers in aging! Part I: Monitoring Biomarkers to Reverse Aging: Part II, Diet, CR & Fasting: Part III: Exercise, Protein Part IV: Optimize Nutrients Through Diet Part V: Inhibit CD38 to Optimize NAD Part VI: […]
In the video below, Steve Hill from Lifespan.io and I talk about findings from a recent paper (https://content.iospress.com/articles/journal-of-alzheimers-disease/jad200306) that supports a role for the gut microbiome on Alxheimer’s disease. Check it out!
Meta-analysis for the association between HDL with all-cause mortality risk has identified HDL levels 55 – 60 mg/dL range as optimal. However, that data includes subjects up to 85y-in the video, I present data for 85y – 115yr olds that additionally suggests HDL in the 55 – 60 mg/dL range […]
Animal products, including meat, cheese, and eggs contain carnitine and choline, metabolites that are converted by gut bacteria into TMA, which is then converted by the liver into TMAO. Plasma levels of TMAO are associated with an increased risk of disease and death, so should we limit intake of these […]
A reduced mortality risk and an increased lifespan has been reported for people who have APOE2 alleles, when compared with APOE3 or APOE4, but beyond associations, data for lifespan in APOE-expressing mice was recently reported, evidence that supports a causative role for APOE on longevity.
My latest blood test results are in-how’s my biological age? In the video I discuss my dietary approach prior to my latest blood test, the blood test results, and my plan to improve them with diet going forward.
Calorie restriction (CR) is well known to extend average and maximal lifespan in a variety of animal models, but what about in people? In this video, I present evidence showing that CR slows biological aging, which suggests that CR will positively affect lifespan in people.
After going on Joe Rogan’s podcast, Paul Saladino, MD, posted his show notes, which included his blood test results. Based on that data, is his biological age optimal while on a carnivore diet?
Sleep changes during aging may impact Alzheimer’s disease risk, and with the goal of minimizing that risk, can sleep, in particular, levels of deep sleep, be optimized?
11 epigenetic clocks have been published since 2011, but which is best for predicting aging and age-related disease? In this video, I present findings from a recent publication, “Underlying features of epigenetic aging clocks in vitro and in vivo”, that compared data for 11 epigenetic clocks, and derived a new […]
Here’s a podcast that was recorded with WildHealth, enjoy!
Cooking foods at temperatures higher than boiling produces advanced glycation end (AGE) products, which induce insulin resistance and inflammation, and shorten lifespan in mice. Similar data exists in humans for the effect of dietary AGE products on insulin resistance and inflammation, and a higher dietary AGE product intake is associated […]
Germ-free mice (animals don’t have a microbiome) live longer than microbiome-containing mice, but it’s impractical for people to live in a bubble for their entire lifespan. As a more practical approach, which microbiome-derived factors impact lifespan, and can they be modified? Dietary supplementation with acarbose increases lifespan, and one reason […]
The incidence of fungi bloodstream infections increases during aging-is that a potential explanation for the presence of fungi in the brains of Alzheimer’s disease patients? Rapamycin is a known antifungal-is it effective against fungi that are found in the blood and brain?
Maximal lifespan in calorie restricted (CR) mice can range from 45 – 55 months. In this video, I present data for 3 studies on rapamycin-can it beat CR for maximal lifespan?
On my latest blood test (August 2015), my total cholesterol was 127 mg/dL-is that value optimal for health and longevity? Based on data for 1,104,294 men younger than 60y (median age, 40y) that were followed for up to 14 years (Fulks et al. 2009), my 127 mg/dL value (1 – 2.4%) […]
In order to slow aging, it’s important to know how circulating biomarkers change during aging, and how these biomarkers are associated with risk of death for all causes. In this video, I discuss blood test data for the oldest old, including centenarians (100 – 104y), semi-centenarians (105 – 109y), and […]
LPS increases during aging, which may explain the age-related increase for CD38 and decreased NAD+. LPS is decreased on a calorie restricted diet, but what else can reduce it? In this video, I present evidence for intestinal alkaline phosphatase’s (IAP) role on LPS, and posit that interventions that increase IAP […]
My latest blood test results are in-how’s my biological age? In the video I discuss my dietary approach prior to my latest blood test, the blood test results, and my plan to improve them going forward.
Vitamin K is found in 2 predominant forms, Vitamin K1 (phylloquinone), found almost exclusively in green leafy vegetables, and Vitamin K2 (Menaquinone), found in fermented foods, organ meats, meat, butter and eggs. In the data below (Juanola-Falgarona et al. 2014), we see that Vitamin K1 (phylloquinone) is negatively associated with […]
NR and NMN are popular ways to try to boost levels of NAD+, but that approach hasn’t worked every time in human studies. One reason for that may involve CD38, which degrades both NR and NMN. With the goal of boosting NAD+ levels during aging, why does CD38 increase with […]
Blood urea nitrogen (BUN) is one of the 19 variables found on the biological age calculator, aging.ai. It measures the amount of nitrogen, as contained in urea (i.e., blood urea nitrogen, BUN) in your blood. The reference range for BUN is 5 – 20 mg/dL, but within that range, what’s […]