Fusing aging theories: Telomere shortening causes mitochondrial dysfunction

New research is adding insight and linking three theories of aging—one that suggests telomere shortening governs lifespan, and two others that suggest dysfunctional mitochondria or oxidative stress leads to aging. At Harvard-affiliated Dana-Farber Cancer Institute, scientists have gathered data suggesting telomere shortening is the cause of mitochondrial dysfunction and diminished antioxidant defenses. Together, they decreaseContinue reading “Fusing aging theories: Telomere shortening causes mitochondrial dysfunction”

Potassium iodide: Why you should avoid it

Ever since the news of Japan’s nuclear crisis, there have been several claims made over the Internet that have panicked people in the U.S. about potential exposure to radiation (one culprit is this viral e-mail), which has led to me being the recipient of questions about whether or not people should be taking potassium iodide supplements to avoid absorption to radioactive iodine.Continue reading “Potassium iodide: Why you should avoid it”

Vitamin K2: Building bones while beating back arterial calcification

Vitamin K2’s time to shine has come—move over vitamin D! Once only known for its role as a “koagulation” factor in blood clotting, vitamin K2 is emerging as another fundamental anti-aging nutrient. While vitamins D and E have garnered the majority of interest in the last decade, the impact of vitamin K2 on aging bonesContinue reading “Vitamin K2: Building bones while beating back arterial calcification”