Prophecy and Psychosis

בבא בתרא דף יב ע"ב  

א"ר יוחנן מיום שחרב בית המקדש ניטלה נבואה מן הנביאים וניתנה לשוטים ולתינוקות

Bava Batra 12b

Ribbi Yochanan says: Since the day that the Bet Hamikdash was destroyed, prophecy was taken away from the nevi'im and given instead to the psychotic and small children. 

A"A says that if anyone ever claims to you that he received a prophecy, you can be confident that he is either lying or mentally ill. 

Talmudic tips for prevention of neurodegenerative disease

הוריות דף יג ע"ב 

חמשה דברים משיבים את הלימוד פת פחמין וכל שכן פחמין עצמן והאוכל ביצה מגולגלת בלא מלח והרגיל בשמן זית והרגיל ביין ובשמים והשותה מים של שיורי עיסה ויש אומרים אף הטובל אצבעו במלח ואוכל הרגיל בשמן זית מסייע ליה לרבי יוחנן דאמר רבי יוחנן כשם שהזית משכח לימוד של שבעים שנה כך שמן זית משיב לימוד של שבעים שנה

Horayot 13b 

Five things that preserve one's memory: Eating bread baked over charcoal and all the more so actual charcoal (- Rash"i) [alternatively- wheaten bread and much more so wheat itself - Soncino Talmud translation], eating hard-boiled eggs without salt, frequent use of olive oil, wine and pleasant scents, and the leftover water from the baking of bread....

'Frequent use of olive oil' confirms what Ribbi Yochanan would say: Just as olives can make you forget seventy years worth of learning, olive oil can preserve seventy years worth of learning. 

Over the past few decades, much research has been put into Alzheimer's disease and its prevention. One of the most effective methods for preventing Alzheimer's disease was a special diet dubbed the MIND diet. It was found to reduce or delay the onset of Alzheimer's disease, even among individuals with a high genetic predisposition to developing it. Among the notable features of the mind diet is the exclusive use of olive oil, a glass of wine daily, and whole grain bread. 

The Angel of Death

עבודה זרה דף כ ע"ב

אמרו עליו על מלאך המות שכולו מלא עינים בשעת פטירתו של חולה עומד מעל מראשותיו וחרבו שלופה בידו וטיפה של מרה תלויה בו כיון שחולה רואה אותו מזדעזע ופותח פיו וזורקה לתוך פיו ממנה מת ממנה מסריח ממנה פניו מוריקות 

Avoda Zara 20b 

It is said of the Angel of Death that he is covered in eyes. At the time that an ill person is ready to die, he stands at the head of the sick person with a sword in his hand. One drop hangs at the tip. The sick person's jaw drops in fear, and the drop falls in. That one drop kills the individual, causes the individual to rot, and their face to go white. 

This gemara is rife with imagery, but has halacha lemaase ramifications as well: When someone passes away at home, it is customary to dispose of all the water in the house. One of the reasons given for this practice is because we are afraid that perhaps a drop of the Angel of Death's horrible toxin diffused into it (בית יוסף יו"ד ס"ס שלט). 

Gross Anatomy

בכורות דף מה ע"א

מעשה בתלמידיו של ר' ישמעאל ששלקו זונה אחת שנתחייבה שריפה למלך בדקו ומצאו בה מאתים וחמשים ושנים אמר להם שמא באשה בדקתם שהוסיף לה הכתוב שני צירים ושני דלתות

Bechorot 45a 

There was once a prostitute who was sentenced to death by the king. Her cadaver was given over to the students of Ribbi Yishmael to corrode and perform osteological studies. After studying her bones, they concluded that there were 252 bones, and not 248 like the Mishnah in Massechet Ohalot (1:9) claims! When they reported this discrepancy to their teacher, he asked them, "Was it a woman which you dissected? A woman's pelvis does not ossify in the same manner that a man's does!"

It is worth noting that according to today's anatomists, the adult human only has 206 bones. A"A addresses this by quoting the Encylopedia HaIvrit, which explains that the Talmudic account of 248 was not meant to be an account of complete bones but rather of ossification centers. 

I would like to add a suggestion. Perhaps the difference lies in the definition of adulthood: anatomical adulthood is defined by the completion of ossification (which occurs at around 20 years of age) while Halachic adulthood is defined as 12 or 13 years of age (for females and males respectively) or the onset of pubic hair growth (if it occurs after that age). Anatomists would agree that at 13 years of age, there are somewhere between 270 and 206 bones in the body.