Fat tissue produces leptin, a hormone that communicates with the brain to regulate energy balance. When fat mass increases, leptin levels in the blood also rise, signaling the brain to curb appetite and increase energy use. However, in obesity, the body's sensitivity to leptin is reduced, blunting these regulatory effects. A recent study in mice found that vitamin D allocates excess calories to muscle growth instead of fat storage by regulating leptin and myostatin, a hormone involved in muscle growth. Researchers fed mice diets containing low, moderate, or high doses of vitamin D for four we... vitamin d exercise fat muscle
Read moreVitamin D is a steroid hormone stored in the body's liver and fatty tissues. Best known for its role in maintaining calcium balance and bone health, vitamin D is critical in many physiological processes, such as blood pressure regulation, immune function, and cell growth. A recent study found that people with the lowest vitamin D concentrations are 97 percent more likely to die prematurely. Researchers measured vitamin D concentrations in more than 19,000 adults with high blood pressure who participated in the National Health and Nutrition Examination Survey. They tracked the participants' he... vitamin d mortality blood pressure
Read moreDopamine is a neurotransmitter best known for its role in motor, motivation, and pleasure control. A new study highlights vitamin D's influence on dopamine signaling and emphasizes its essential role in the normal development of dopamine-producing cells. Researchers developed three cell lines to mimic the natural process of embryonic development, during which cells differentiate (specialize) into dopamine-producing neurons. Then they cultured the cells in the presence or absence of vitamin D. They found that vitamin D participated in neuronal growth and branching, the rearrangement of presyna... vitamin d brain omega-3 neurotransmitter schizophrenia dopamine
Read moreThe role of Vitamin K1 in blood clotting is well established. However, a new study shows that higher vitamin K1 intake may also reduce the risk of type 2 diabetes. People with higher K1 intake were more than 30 percent less likely to develop type 2 diabetes than those with lower intake. Researchers tracked the health and dietary intake of nearly 55,000 adults for approximately 20 years. Then they used statistical analysis to identify links between vitamin K1 intake and the risk of type 2 diabetes. They found that people with the highest vitamin K1 intake were 31 percent less likely to develop ... diet diabetes vitamin k
Read moreSupplemental vitamin C and arginine reduce symptoms associated with long COVID, a new study shows. People who took the combined supplements experienced less fatigue and performed better during exercise. Researchers gave people with long COVID either a combination of liposomal vitamin C and arginine or a placebo for four weeks. They measured their walking speed, strength, and endothelial function before and after the intervention. They found that those who took the vitamin C/arginine combination improved on measures of speed, strength, and endothelial function compared to those who took the ... vitamin c covid-19 supplements
Read moreRe-analysis of landmark vitamin C trial data reveals current recommendations for intake may be too low for optimal health. During World War II, researchers in England conducted an experiment to determine the level at which vitamin C depletion causes scurvy, a potentially life-threatening collagen-related disorder. A re-analysis of these findings calls into question current recommendations for vitamin C intake. The study involved 20 healthy men who had been fed a diet providing 60 to 70 milligrams of vitamin C daily for about one month. The researchers randomly assigned the men to receive zer... vitamin c tissue repair policy protein
Read moreVitamin D is a fat-soluble vitamin that plays key roles in several physiological processes, including immune function. Robust evidence demonstrates links between poor vitamin D status and severe outcomes following infection with SARS-CoV-2 (https://www.tandfonline.com/doi/full/10.1080/10408398.2020.1841090), the virus that causes COVID-19. Now, findings from a recent study suggest that poor vitamin D status prior to infection with SARS-CoV-2 increases the risk of severe disease and/or death from COVID-19. During an infection, vitamin D deficiency can lead to over-expression of renin (an enzy... vitamin d covid-19
Read moreCancer is the second leading cause of death worldwide, claiming the lives of nearly 10 million each year. As the number of cancer drugs has increased in recent years, so too have the costs associated with their use. Findings in a recent report indicate that vitamin D may reduce the number of cancer deaths, saving thousands of dollars. The authors of the study drew on data regarding age- and sex-specific cancer deaths in the German Center for Cancer Registry. They estimated the costs of cancer treatment and years of living lost in people over the age of 50 years since most cancer deaths occur ... vitamin d cancer
Read moreVitamins and minerals are essential micronutrients that play critical roles in immune function, especially vitamins C and D and zinc, a mineral. Many older adults living in developed countries are at risk for micronutrient deficiency (https://onlinelibrary.wiley.com/doi/abs/10.1177/0884533609332177). Findings from a new study indicate that micronutrient supplementation may improve immune function in people over the age of 55 years. The randomized controlled trial involved 42 healthy older adults (55 to 75 years old). Half of the participants took a commercial multivitamin supplement that was ... immune system micronutrients
Read moreDr. Rhonda Patrick makes her ninth appearance on the Joe Rogan Experience. ... covid-19 vitamin d vitamin c immune system zinc sauna
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