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“Interestingly, case and anecdotal reports suggest that hair re-pigmentation can occur, causing bicolor hairs. The authors of the study collected dark, depigmented, and bicolor hairs from 14 healthy young adults (average age, 35 years) who did not color, bleach, or chemically treat their hair.”

“Sleep deprivation increases a person's risk of developing many chronic illnesses, including cardiovascular disease, kidney dysfunction, hypertension, diabetes, stroke, obesity, and depression. More than a third of all adults living in the United States report having poor sleep habits.”

“A growing body of evidence indicates that eating a fiber-rich diet decreases the risks of many chronic diseases, such as coronary heart disease, stroke, hypertension, diabetes, and some types of cancer, including breast cancer and colon cancer.”

“After six weeks, participants were about 1 pound (0.45 kg) heavier and had waists about 0.5 cm larger under shorter sleep, but MRI scans did not show a clear shift in body fat or skeletal muscle proportions. Changes in physical activity were limited to sedentary time.”

“A growing body of evidence indicates that the fasting-mimicking diet may be beneficial in treating autoimmune disorders. In these Aliquot segments, Dr. Rhonda Patrick and Dr. Valter Longo describe the roles that diet and fasting play in maintaining or restoring proper immune function.”

“Observational studies using DXA or CT imaging associate higher alcohol intake with greater visceral fat, with individual responses shaped by dose, drinking pattern, diet, sex, activity, body composition, and metabolic health.”

“In small doses, stress can sharpen focus and improve resilience, but chronic stress gradually erodes emotional stability, increasing the risk of major depressive disorder. A recent study found that autophagy—the brain's recycling and housekeeping system—helps maintain emotional stability by removing old or damaged proteins.”

“A new study looked at associations of physical activity and time spent sitting on brain thickness and found sedentary behavior, but not physical activity, was associated with less thickness in brain regions that are essential to memory function.”

“Randomized controlled trial finds that high dose vitamin D supplementation (4,000 IU/day) for 18 weeks improves visual memory in healthy adults but low-dose vitamin D (400 IU/day) does not.”

“Use of antibiotics may result in chronic inflammation and tumorigenesis due to overgrowth of pathogens such as Clostridium difficile; however, additional research is needed to understand the difference between classes of antibiotics and the effects of dose and duration.”