Telomeres serve as protective caps at the ends of chromosomes, and when they shrink too much, cells stop dividing and age. Shorter telomeres have been linked to an increased risk for age-related diseases and premature death. A recent study found that daily vitamin D3 supplementation slowed telomere shortening by about 25% over four years in older adults. Researchers recruited 1,031 participants from the large VITAL (https://www.vitalstudy.org) trial who took vitamin D3 (2,000 IU daily), omega-3 fatty acids (1 gram daily), both, or a placebo for four years. The researchers measured each person'... aging
Read moreMuscle mass declines markedly with age, with up to 8 percent muscle mass loss occurring per decade after age 30. Evidence suggests that naringenin, a flavonoid compound found in citrus fruits, maintains muscle mass in aging. Mice that ate a diet supplemented with naringenin showed improved muscle endurance and grip strength. Researchers supplemented the diets of young adult mice, middle-aged mice, and mice prone to muscular dystrophy (accelerated muscle loss) with naringenin. Then, they assessed naringenin’s effects on exercise capacity and aerobic metabolic levels in skeletal muscle. They fo... nutrition aging muscle polyphenol
Read moreNearly 50 million people worldwide live with Alzheimer’s disease or another form of dementia — a number projected to triple in the coming decades. However, a recent study suggests the number could be even higher, as much as 40 percent more than previous estimates. Researchers analyzed data from the English Longitudinal Study of Ageing, a long-term study of older adults living in England and Wales. They identified dementia cases from among more than 90,000 people. Then, they analyzed how dementia incidence changed over time based on age, sex, and education. They found that dementia incidence ... alzheimer's aging dementia
Read moreDr. Stuart Phillips discusses how exercise and nutrition influence skeletal muscle-protein turnover and muscle maintenance throughout the lifespan. ... exercise vitamin d nutrition diet aging metabolism omega-3 testosterone muscle protein
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Read moreThis double-blind, placebo-controlled study showed that supplementation with 2.9 grams of omega-3 fatty acids per day for 6 months has a significant effect on the immune system by decreasing inflammatory biomarkers by 50% and increasing anti-inflammatory markers by 100%. Inflammation is considered an important factor in disease progression. Although no clinical endpoints were measured in the study, the robust effects on the immune system would almost certainly improve some symptoms of muscular dystrophy. ... omega-3 inflammation muscle
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