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Questions continue to be raised about the mental and physical health of President Donald Trump.

Slurred or rambling speech has been caught on camera at MAGA rallies and other presidential events.

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Reportage at a French Blood Establishment blood donation session in Haute-Savoie, France. (Photo by: BSIP/UIG via Getty images)

Building on previous research into aging brains, new research conducted at University of California, San Francisco (UCSF), published in the journal Cell, has discovered that the blood of the young can regenerate the brains of the old. One day, this might enable the creation of therapies to treat age-related diseases such as Alzheimer’s. However, before you go looking for a teenager to harvest blood from, keep in mind that the research has only been tested in mice. However, there is a clinical trial underway by a Monterey, California-based startup known as Ambrosia, where you can attempt to young-down your brain with youthful blood transfusions for a cool $8000.

The UCSF researchers, led by neurobiologist Saul Villeda, drew upon the effects of a recently discovered cellular enzyme known as Tet2 (ten eleven translocation methylcytosine dioxygenase 2), an epigenetic regulator, which makes chemical annotations to parts of DNA that change the activity of many different genes, including some that help prevent cognitive decline in the aging brain. Many of the genes it marks are indicated in increased risks of common age-related health conditions (which also are common killers), such as cancer, cardiovascular disease, and stroke.

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Imagine lying on a pristine beach. You are alone, with nothing but a beach chair and the sound of those turquoise waves breaking on the white sand to keep you company. Can you picture it? Yes, but can you actually picture it? Like, do you see the waves moving and breaking, do you see the sand sifting between your toes? Or do you see… nothing?

If you’re like about two percent of the population, you see nothing—a newly-discovered condition known as aphantasia. Discovered in 2015, the study of aphantasia is complicated by the fact that it’s hard to determine whether aphantasia is even real. We can’t look into each other’s minds to see what the other sees.  So when people are asked to imagine things and describe what they see, it’s hard to tell whether they are just seeing the same thing and describing them differently.  

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