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“It goes far beyond its reputation as the building block of muscle, playing a crucial role in metabolism, insulin sensitivity, and the prevention of diseases like type 2 diabetes and sarcopenia. But questions abound: How much protein is enough, and can too much, particularly from animal sources, be harmful?”

“Even though less research has been devoted to investigating exercise snacks and VILPA, they’re consistently associated with better fitness and metabolic health. All of this begs the question: With so many types of exercise to choose from, what should we be doing to live longer?”

“However, the question of whether rapamycin can slow aging in humans remains a subject of intense debate, with concerns about its broader effects and long-term safety still unresolved. Rapamycin targets a cellular pathway called mTOR, which is crucial for growth, repair, and healing.”

“Taking it a step further, they investigated how sodium and potassium impact blood pressure in men and women differently—a critical question since cardiovascular diseases disproportionately affect men compared to women due to differences in nitric oxide bioavailability, inflammation, electrolyte balance, and sympathetic nervous system activity.”

“Frequently Asked Questions Q: Are there supplements that help prevent leaky gut? A: Fiber, polyphenols, and probiotics are all under investigation for their health benefits, including strengthening the gut barrier and preventing leaky gut.”

“Frequently Asked Questions Q: What lifestyle factors prevent or ameliorate blood-brain leakage? A: Many lifestyle factors help maintain blood-brain barrier integrity, including: Maintaining low visceral fat: Visceral fat, which accumulates around the abdominal organs, promotes inflammation and increases the risk of metabolic syndrome.”

“The study followed 82,826 UK Biobank participants and used wrist-worn sensors, so it measured environmental exposure rather than the dose reaching the retina. It was also observational. The result does not establish that ordinary screens cause eye disease, but it expands the nighttime-light question beyond melatonin and sleep.”

“How do I decide how much vitamin D to supplement with? Can you get too much vitamin D? Is there a difference in vitamin D made from the sun versus a supplement? What form of vitamin D is more bioavailable and absorbed better?”

“Here are some interesting reports that didn't make it into this issue of the Digest. Evidence suggests that leave-on cosmetic and personal care products—such as moisturizers, sunscreens, and deodorants—are prominent sources of microplastic exposure.”

“In this clip from Dr. Rhonda Patrick's appearance on Katie Couric's Next Question, she explains why magnesium supports both immediate energy needs and long-term cellular maintenance. Magnesium serves as a cofactor for more than 300 enzymes and helps maintain DNA structure, replication, and repair systems.”