After a heart attack, patients must create new heart muscle cells to heal. A new study shows that mice make more new heart muscle cells when they exercise compared to when they do not. This was true for both healthy mice and those that had experienced a heart attack. Findings demonstrate that one reason exercise is beneficial to health is that it increases the heart’s capacity to regenerate.
Eating Schedule and Huntington Disease
Huntington disease (HD) is an inherited progressive disease that can cause involuntary movements and psychological problems. Symptoms of HD appear in adulthood and worsen over time. Children with at least one parent with HD have a 50% chance of developing HD. As of now, HD is thought to be caused by the buildup of mutant huntingtin protein (mHTT) and there is no known cure. HD is linked to a problem with autophagy (cell death). The University of British Columbia (UBC) published research involving a mouse model of HD. Mice were restricted to a 6 hour eating windown, which prompted autophagy in the mice. There are practical applications for humans utilizing intermittent fasting, or a fasting mimetic diet.
Eggs and Infants
Eggs. They are good for you, this much is made more and more obvious every day. Recently though, the Brown School at Washington University in St. Louis, published research stating that eggs are beneficial for infants as well.
Starting at 6 months of age, infants were fed eggs (whole eggs) as part of their diet. The infants, aged 6-9 months, were fed 1 egg per day. Eggs, being high in choline precursors, DHA, vitamins A, B12, selenium and other fatty acids, are vital for brain development.
Artificial Sweeteners and Crohn’s
Researchers at Case Western Reserve University found artificial sweeteners (splenda, maltodextrin, and sucralose) worsened the symptoms of people with Crohn’s disease. Accorfding to the research, the artificial sweeteners increased the presence of proteobacteria and myeloperoxidase. Both of these are involved in inflammatory and autoimmune responses in people with Crohn’s. Researchers did not find the same reaction in people that do not suffer from Crohn’s.
Exercise Slows Aging
Yet another reason to regularly exercise. The University of Birmingham and Kings College, London conducted research regarding exercise and aging. The study consisted of 125 participants, aged 55-79, 84 males and 41 females. Excluded from the study were smokers, heavy drinkers, and those who had high blood pressure. A control group of 75 non-exercisers was measured as well. The treatment group, the exercisers, had no loss of muscle mass or strength, no increase in body fat or cholesterol and their testosterone levels remained stable. The immune systems of the exercisers was also comparable to a younger person. One reason for this, according to the researchers, was that exercise prevented the shrinking of the thymus, which normally begins around age 20.
A study sheds new light on the connection between the gut and the brain, untangling the complex interplay that allows the byproducts of microorganisms living in the gut to influence the progression of neurodegenerative diseases.
Sirtuins are a class of proteins that possess either mono-ADP-ribosyltransferase or deacylase activity. Sirtuins regulate many important biological pathways in bacteria, archaea, and eukaryotes. There are many sirtuins, differentiated by numbers, 1-7.
Benefits of Sirtuins
Biology lesson aside, sirtuins provide many benefits. Different sirtuins have been shown to be:
- Important in aging and apoptosis (programmed cell death)
- DNA repair
- Mitochondrial biogenesis (new mitochondria)
- Vital along with NAD+, for the regulation of energy metabolism (aging and longevity)
- Important for reducing oxidative stress (by inhibiting reactive oxygen species)
- Helpful in improving endurance and muscle growth
How To Get Your Sirtuins
While the way they work and even what they are is a bit complicated, getting enough of them in your diet is not. Plenty of foods contain sirtuins. Make sure to get enough of the following in your diet:
- Black currants
- Green tea
- Dark chocolate
- Kale and/or borecole
- Extra virgin olive oil
A recent study finds that older adults are better than younger adults at anticipating stressful events at home — but older adults are not as good at using those predictions to reduce the adverse impacts of the stress.
Age-related declines in stem cell function can be reversed by a 24-hour fast, according to a new study. Biologists found fasting dramatically improves stem cells’ ability to regenerate, in both aged and young mice.