Professor, Scientist. Mission: Extend healthy life for all. Views & analyses are my own.
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Jan 25 • 8 tweets • 3 min read
New study finds immune T cells engineered to kill zombie senescent cells 🧟♀️ can reverse key aspects of aging in mice 🐁 including metabolic & physical decline. Imagine a single treatment that protects from aging, for life…see thread nature.com/articles/s4358…
CAR T-cell therapy, short for Chimeric Antigen Receptor T-cell therapy, is a type of treatment in which a patient’s immune T cells are changed in the laboratory so they will attack cancer cells or, in this case, senescent cells that cause aging
Dec 15, 2023 • 15 tweets • 6 min read
“The Information Theory of Aging” was published today. Free copy @NatureAging rdcu.be/dtGSC
The “ITOA” states that a cause of aging is a loss of epigenetic information that disrupts the ability of cells to read the right genes, causing them to lose their identity and malfunction…
Dec 13, 2023 • 9 tweets • 3 min read
400 million people are allergic to dust mites, which feed on skin flakes in beds & carpets. When mice were exposed to mite allergens, the NAD booster NMN reduced airway inflammation & mucus. Trials of NMN against allergies & asthma are warranted 🤧 See thread…
Here’s the primary paper: sciencedirect.com/science/articl…
Nov 29, 2023 • 14 tweets • 6 min read
Our latest paper adds to the scientific discussion on the role of sirtuins in aging. There been some confusion about the implications.
Here’s the scoop:
onlinelibrary.wiley.com/doi/full/10.11… 1. From 1994-2005, the budding-yeast “silent information regulator #2” or “SIR2” gene was shown to extend lifespan & mediate lifespan extension due to hormetic biostressors e.g. heat, low aminos & calorie restriction…
Isoleucine is an essential amino acid which, in excess, counters the health benefits of the mTOR longevity pathway. The @LammingLab is reporting that an isoleucine-restricted diet extends the lifespan of mice by 33% 👏 @Cell_Metabolism
Here a link to the paper…cell.com/cell-metabolis…
Oct 9, 2023 • 10 tweets • 4 min read
New study shows people with increased iron blood markers tend to have older epigenetic ages. Another piece of evidence that high iron levels probably accelerate aging… 1/n tinyurl.com/zhy72aun
More and more scientists suspect that high iron levels probably cause normal cells to age faster and ultimately become senescent zombie cells 🧟♀️. We know for sure that a common feature of senescent cells is their high iron content
Jul 12, 2023 • 10 tweets • 4 min read
Grateful to share our latest publication: We’ve previously shown age reversal is possible using gene therapy to turn on embryonic genes. Now we show it’s possible with chemical cocktails, a step towards affordable whole-body rejuvenation 1/17 aging-us.com/article/204896…
For over three years, the team @harvardmed has worked long hours searching for molecules that, in combination, reverse cellular aging & rejuvenate senescent human cells 👏 C1-6 are the cocktails below vs age 2/17
Jun 30, 2023 • 6 tweets • 2 min read
Aspartame in diet sodas, gum and some Snapple drinks will be listed by @WHO as "possibly carcinogenic to humans," while a new study indicates another popular sweetener, Splenda, causes damage to DNA and the gut. Read on…
Articles:
Sucralose
A nightmare substance would be one that, in low doses, protects the heart, but is toxic to the brain. According to research in the last few years, that substance is alcohol… 🍷 tinyurl.com/3kru67hn
Long-term drinking also induces changes in neurotransmitter systems that ultimately lead to the development of craving and alcohol-seeking behavior ncbi.nlm.nih.gov/pmc/articles/P…
Jun 11, 2023 • 4 tweets • 1 min read
SIRT1-7 enzymes protect the body. Nicotinamide riboside (NR), an NAD precursor, activates SIRT5 by raising NAD but also by binding to SIRT5, just like resveratrol, oleic acid & quercetin activate SIRT1 & long-chain fatty acids activate SIRT6. Unexpected finding for sure…
Here’s the new paper: febs.onlinelibrary.wiley.com/doi/10.1111/fe…
Novel combination of metformin & resveratrol alleviates fatty liver by activating autophagy via AMPK/SIRT1. Triple combo with rapamycin was the strongest effect link.springer.com/article/10.100…
This is a brief by interesting study of the effects of palmitic acid (a saturated long chain fatty acid) on human HepG2 liver cells. Have been on a rev - metformin combo for >8 years..
May 14, 2023 • 7 tweets • 3 min read
Draft illustration for a paper on age reversal & the information theory of aging (ITOA). Suggestions welcome
I'm reminded how quickly discoveries came in the late 1990s and early 2000s, figuring out why yeast age and how to control yeast aging. The pace is picking up again, now in mice and monkeys
May 14, 2023 • 9 tweets • 4 min read
A Unified Theory of Aging came together in 2005. When I joined the field, in 1995, the view was that aging is caused by ‘‘death’’ genes, as if it were an extension of development. That was wrong but there was an element of truth sciencedirect.com/science/articl…
Newbies to the field argued that aging is not adaptive (helpful) for most species, so it cannot be a program...
May 10, 2023 • 11 tweets • 4 min read
An abundance of energy, either circulating in your blood as sugars or triglycerides, or stored as fat, puts you in ‘abundance mode’ (not ‘adversity mode’) so your body doesn’t bother fighting for survival, and this increases inflammation & accelerates aging… 1/10
There are two camps. Those who read scientific papers & understand that resveratrol 🍷 is a proven SIRT1 activator that works in clinical trials…and those who don’t 🙉 1/9… academic.oup.com/proteincell/ar…
In this 2022 study, resveratrol taken for 6 months @ 500 mg/day) improved inflammation, renal function, blood glucose, inflammation, insulin resistance, and nutrient sensing systems in the elderly patients with type 2 diabetes 2/9. journals.lww.com/md-journal/Ful…
May 4, 2023 • 8 tweets • 4 min read
Wow. New study supports the Information Theory of Aging: PULSED activation of the SIR2 gene - an epi-genomic stabilizer - increases yeast lifespan 82%! So, should ADVERSITY be PULSED for max effect? Read on⬇️
Leverages work I did with Lenny Guarente and team in the 1990's showing that epigenetic information loss (triggered by DNA instability) is a cause of aging...
Apr 24, 2023 • 11 tweets • 7 min read
Age reversal works in primates to restore vision. Announced by my collaborator Dr. Bruce Ksander & @lifebiosciences. Next up: age reversal in humans.
How’s that @elonmusk? 🚀 tinyurl.com/5n6b59kc 1/10…
Congratulations to the teams @harvardmed@MassEyeAndEar and @lifebiosciences, the company I cofounded in 2017 to use longevity science to combat age-related diseases. Couldn’t be prouder! 2/
Apr 23, 2023 • 4 tweets • 2 min read
Amazing! New paper shows biological age rapidly increases during stress & reverses when the stress is relieved. That’s a relief 😅 sciencedirect.com/science/articl…
“Here, we report that biological age is fluid and exhibits rapid changes in both directions. At epigenetic, transcriptomic, and metabolomic levels, we find that the biological age of young mice is increased by heterochronic parabiosis [blood sharing] and restored following… twitter.com/i/web/status/1…
Apr 6, 2023 • 5 tweets • 2 min read
Lipitor (atorvastatin, 10 mg/d) but not Crestor (Rosuvastatin) activates the longevity enzyme SIRT1, potentially explaining the benefits on inflammation and ED. If you've heard these drugs hurt the brain, read on... 1/3
In a pooled analysis, these drugs, known as statins were associated with a decreased risk of dementia. The black bars are to the left of the center line for most clinical trials, which indicates protection from dementia. 2/3
Apr 1, 2023 • 5 tweets • 2 min read
Study involving 135 obese subjects finds calorie restriction, the 5:2 fasting diet, and a high protein diet (HPD) dramatically improve weight, lipids, and blood glucose within 60 days. HPD worked best. tinyurl.com/5dth48jb
Calorie restriction diet limited daily total energy intake to 500 - 800 kcal. 5:2 diet was to eat healthily 5 d/w and skip meals 2 d/w. The HPD increased protein to 20 - 30% of the daily total energy or 1.5 to 2.0 g/kg bw. Exercise at least 3 x/week for >150 min was recommended