David A. Sinclair Quotes

Don't be disheartened by my claim that we are the biological equivalent of an old DVD player. This is actually good news. If Szilard had turned out to be right about mutations causing aging, we would not be able to easily address it, because when information is lost without a backup, it is lost for good. Ask anyone who's tried to play or restore content from a DVD that's had an edge broken off: what is gone is gone. But we can usually recover information from a scratched DVD. And if I am right, the same kind of process is what it will take to reverse aging.

THE THREE MAIN LONGEVITY PATHWAYS, mTOR, AMPK, AND SIRTUINS, EVOLVED TO PROTECT THE BODY DURING TIMES OF ADVERSITY BY ACTIVATING SURVIVAL MECHANISMS. When they are activated, either by low-calorie or low-amino-acid diets, or by exercise, organisms become healthier, disease resistant, and longer lived. Molecules that tweak these pathways, such as rapamycin, metformin, resveratrol, and NAD boosters, can mimic the benefits of low-calorie diets and exercise and extend the lifespan of diverse organisms.

Using your nondominant hand, write your name, address, and phone number while circling your opposite foot counterclockwise.

A new scientific truth does not triumph by convincing its opponents and making them see the light, Planck wrote shortly before his death in 1947, but rather because its opponents eventually die, and a new generation grows up that is familiar with it.

They have also evolved to require a molecule called nicotinamide adenine dinucleotide, or NAD. As we will see later, the loss of NAD as we age, and the resulting decline in sirtuin activity, is thought to be a primary reason our bodies develop diseases when we are old but not when we are young.

They have also evolved to require a molecule called nicotinamide adenine dinucleotide, or NAD. As we will see later, the loss of NAD as we age, and the resulting decline in sirtuin activity, is thought to be a primary reason our bodies develop diseases when we are old but not when we are young. Trading reproduction for repair, the sirtuins order our bodies to "buckle down" in times of stress and protect us against the major diseases of aging: diabetes and heart disease, Alzheimer's disease and osteoporosis, even cancer. They mute the chronic, overactive inflammation that drives diseases such as atherosclerosis, metabolic disorders, ulcerative colitis, arthritis, and asthma. They prevent cell death and boost mitochondria, the power packs of the cell. They go to battle with muscle wasting, osteoporosis, and macular degeneration. In studies on mice, activating the sirtuins can improve DNA repair, boost memory, increase exercise endurance, and help the mice stay thin, regardless of what they eat. These are not wild guesses as to their power; scientists have established all of this in peer-reviewed studies published in journals such as Nature, Cell, and Science.

One of the best ways to visualize this is to think of our genome as a grand piano.13 Each gene is a key. Each key produces a note. And from instrument to instrument, depending on the maker, the materials, and the circumstances of manufacturing, each will sound a bit different, even if played the exact same way. These are our genes. We have about 20,000 of them, give or take a few thousand.14 Each key can also be played pianissimo (soft) or forte (with force). The notes can be tenuto (held) or allegretto (played quickly). For master pianists, there are hundreds of ways to play each individual key and endless ways to play the keys together, in chords and combinations that create music we know as jazz, ragtime, rock, reggae, waltzes, whatever. The pianist that makes this happen is the epigenome.

Aging, quite simply, is a loss of information.

I take 1 gram (1,000 mg) of NMN every morning, along with 1 gram of resveratrol (shaken into my homemade yogurt) and 1 gram of metformin.7 • I take a daily dose of vitamin D, vitamin K2, and 83 mg of aspirin.

Cyteir Therapeutics, which develops novel ways to fight

Aunque no es inmortal, el tiburón boreal Somniosus microcephalus sigue siendo un animal impresionante y está mucho más emparentado con nosotros. Es casi del mismo tamaño que un tiburón blanco y no alcanza la madurez sexual hasta los ciento cincuenta años. Los investigadores creen que el océano Ártico podría ser el hogar de los tiburones boreales que nacieron antes de que Colón se perdiera en el Nuevo Mundo. Según la datación por carbono 14, un ejemplar enorme podría haber vivido más de quinientos diez años, al menos hasta que los científicos lo capturaron para poder dictaminar su edad. El hecho de que las células de este tiburón envejezcan o no es un debate científico abierto; muy pocos biólogos habían estudiado al S. microcephalus hasta hace unos años. Como mínimo, este longevo vertebrado experimenta el proceso del envejecimiento muy pero que muy despacio.

The way doctors treat illness today "is simple," wrote S. Jay Olshansky, a demographer at the University of Illinois. "As soon as a disease appears, attack that disease as if nothing else is present; beat the disease down, and once you succeed, push the patient out the door until he or she faces the next challenge; then beat that one down. Repeat until failure."

Our equivalent of the Lord's Prayer was the English author Alan Alexander Milne's poem "Now We Are Six," which ends: But now I am six, I'm as clever as clever. So I think I'll be six now for ever and ever.

In The Structure of Scientific Revolutions, Thomas Kuhn noted that scientific discovery is never complete; it goes through predictable stages of evolution. When a theory succeeds at explaining previously unexplainable observations about the world, it becomes a tool that scientists can use to discover even more.

Do your part to make humanity be the best it can be. Don't waste a moment. Embrace your youth; hold on to it for as long as you can. Fight for it. Fight for it. Never stop fighting for it.