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    Breaking News

    Study Shows NIAGEN Could Improve Blood Pressure and Cardiovascular Health

    Pilot study suggested form of vitamin B3 mimics caloric restriction.

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    03.29.18
    A new study by researchers from the University of Colorado Boulder and published in the journal Nature Communications indicated that daily supplementation with NIAGEN nicotinamide riboside chloride (NR), a form of vitamin B3 from ChromaDex Corp. mimics caloric restriction, kick-starting the same chemical pathways responsible for its health benefits. Supplementation also tended to improve blood pressure and arterial health, particularly in those with mild hypertension, the study found.
     
    For the study, Doug Seals, a professor and researcher in the Department of Integrative Physiology, and lead author Chris Martens, then a postdoctoral fellow at CU Boulder, included 24 lean and healthy men and women ages 55 to 79 from the Boulder area.
     
    Half were given a placebo for six weeks, then took a 500 mg twice-daily dose of nicotinamide riboside (NR) chloride (NIAGEN). The other half took NR for the first six weeks, followed by placebo.
     
    The researchers took blood samples and other physiological measurements at the end of each treatment period. Participants reported no serious adverse effects.
     
    The researchers found that 1,000 mg daily of NR boosted levels of another compound called nicotinamide adenine dinucleotide (NAD+) by 60%. NAD+ is required for activation of enzymes called sirtuins, which are largely credited with the beneficial effects of calorie restriction. It's involved in a host of metabolic actions throughout the body, but it tends to decline with age.
     
    Research suggests that as an evolutionary survival mechanism, the body conserves NAD+ when subjected to calorie restriction. But only recently have scientists begun to explore the idea of supplementing with so-called "NAD+-precursors" like NR to promote healthy aging.
     
    "The idea is that by supplementing older adults with NR, we are not only restoring something that is lost with aging (NAD+), but we could potentially be ramping up the activity of enzymes responsible for helping protect our bodies from stress," Martens said.
     
    The new study also found that in 13 participants with elevated blood pressure or stage 1 hypertension (120-139/80-89 mmHg), systolic blood pressure was about 10 points lower after supplementation. A drop of that magnitude could translate to a 25 percent reduction in heart attack risk.
     
    "If this magnitude of systolic blood pressure reduction with NR supplementation is confirmed in a larger clinical trial, such an effect could have broad biomedical implications," the authors noted.
     
    Ultimately, the authors said, such CR-mimicking compounds could provide an additional option—alongside the dietary changes and exercise currently recommended—for people whose blood pressure is not yet high enough to warrant medication but who are still at risk for a heart attack.
     
    They stressed that the study was small and "pilot in nature."
     
    "We are not able to make any definitive claims that this compound is safe or going to be effective for specific segments of the population," said Martens, now an assistant professor at the University of Delaware. "What this paper provides us with is a really good stepping stone for future work."
     
    Martens and Seals have applied for a grant to conduct a larger clinical trial looking specifically at the impact of NR supplementation on blood pressure and arterial health. Martens is also launching a separate trial looking at the impact NR has on older adults with mild cognitive impairment, a precursor to Alzheimer's disease.
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