Tag: "calorie" at biology news

Calorie restriction leads to some brain benefits but not others in mice

St. Louis, Oct. 24, 2004 -- Severe calorie restriction prevents certain aging-related changes...and the processes underlying both normal aging and calorie restriction benefits," says principal investigator Laura L. Dugan, M.D., associate professor of neur...

Hold the stuffing: Low-glycemic diet may help keep weight off

... "That hasn't been shown before. The idea that 'a calorie is a calorie is a calorie' doesn't really explain why conventional weight-loss diets usually don't work for more ...

Alcoholism and excessive food intake may share chemical pathways in the brain

...ailable; however, as a control for galanin-induced calorie intake, both the alcohol and food were measured in a subset of rats during the dark period of the day cycle. "The injection of galanin into the third ventricle increased alcohol intake, but not water," said Lewis. "This effect was found during both ...

Enjoy naturally nutrient-rich foods for better health

...educe their waistlines, it's critical to make each calorie count more by selecting foods with more essential nutrients in fewer calories. Research indicates consumers are more motivated by positive, realistic messages, and the Coalition offers simple "how to" advice to help people eat more nutrient-rich ...

Reduced calorie and carbohydrate diet slows progression of Alzheimer's disease in mouse model

...nt was detected in the mice fed a carbohydrate and calorie restricted diet. The diet regimen was begun when ... mice fed the restricted diet. In other words, the calorie restricted diet activated pathways that break down amyloidogenic -amyloid peptides in the brain befo...

UCLA/VA researchers discover fat gene

...m their daily activities. Because lipin moderates calorie use in muscle, its absence caused the mice to burn more calories to fulfill the same tasks as normal mice. "Our study suggests that variations in lipin levels could determine a person's tendency to gain weight by influencing how their body stores and...

Beer-drinking rats count calories better than many people, UF researchers say

...years ago. On average, women increased their daily calorie consumption 22 percent between 1971 and 2000, from...ories. During the same period, men increased their calorie intake 7 percent, from 2,450 calories per day to 2,618 calories. UF scientists, who monitored the f...

Future diabetes drugs may target new protein interaction

...esses involved in cellular aging and responding to calorie intake in mammals for the first time. In bacteria ...t sirtuin1 is directly involved in the response to calorie restriction in mammals and in processes involved in cellular aging," says Puigserver. "But we still ...

Fasting intermittently reduces cell proliferation, a marker for cancer risk, study finds

... certain only of a link between a more substantial calorie reduction and a reduction in the rate of cell prol...he past 70 years have established that substantial calorie reduction - up to 50 percent in some studies - not only can reduce the rate of cell proliferation, i...

Altering steroid receptor genes creates fat burning muscle

...cal metabolism is activated resulting in increased calorie burning. Increasing PPARd activity in muscle produces the "marathon mouse," characterized by super-ability for long distance running. Marathon mice contain altered muscle composition, which doubles its physical endurance, enabling it to run an hour ...

Jeffrey Friedman, discoverer of leptin, receives Gairdner, Passano awards

...ficant weight loss in obese patients on a very low calorie diet. In 2002, Friedman and colleagues at Rockefeller and the University of Wisconsin at Madison uncovered another component of the biological system that controls body weight: they showed that an enzyme called SCD-1 works through leptin to signal th...

Consequences of exposure to an energy rich diet during development

...that maternal obesity and a high saturated fat and calorie intake are not conducive to optimal development of the fetus and newborn, and may increase the risk of heart disease and diabetes in later life....

Longevity controlled by calorie quality, not quantity

... adjust nutrient composition without affecting the calorie count, allowing them to separate the effects of calories and nutrients. Reducing both nutrients increased the flies' life spans, but yeast had a much greater effect: reducing yeast from control to dietary restriction levels increased median life span...

Non-dieters more successful at boosting health than dieters, study finds

...n as Health at Every Size. Rather than focusing on calorie counting, this approach encourages obese individuals to actually back off from monitoring how much food they eat and, instead, train themselves to pay more attention to internal body cues that signal hunger and fullness. The UC Davis study was develo...

Family of life-extending genes discovered

...nger life. Triggered by low salt, heat, or extreme calorie restriction, a yeast "master longevity regulator" called PNC1 stimulated Sir2 activity. This new work, led by Harvard graduate student Dudley Lamming, demonstrates that PNC1 regulates the whole SIR2 family of genes, suggesting that a human PNC1 gene ...

High doses of vitamin E boost rat survival rate 40%; brain function, neuromuscular gains

...said the team has completed studies on the role of calorie reduction (CR), "which could yield interesting results especially in comparison with similar, but much longer, rhesus monkey studies being carried out by Richard Weindruch at the University of Wisconsin-Madison on CR and oxidative stress."...

New lifespan extension genes found

...s and Harvard Medical School. Drastically reducing calorie intake, or caloric restriction, is known to extend the lifespan of species including yeast, worms and rodents. Previous research linked a gene called Sir2 with lifespan extension due to caloric restriction, but worms and yeast that lack Sir2 also liv...

Gene makes muscles in the obese store more fat

... active in obese people not only because of excess calorie intake, but also as a result of heritable changes in its regulation, Muoio said. "The cells of obese people remembered their metabolic program, which could help explain, in part, why losing weight and maintaining weight loss is so difficult," Muoio s...

Restricting diet may reverse early-stage Parkinson's disease

...stage Parkinson's disease patients who lower their calorie intake may boost levels of an essential brain chem... Meshul said. Researchers found that animals whose calorie intake was lowered by 20 percent aged better, suffered from fewer immunological disorders, displayed...

Researchers find pathways linking caloric restriction to aging process

...oint to a possible mechanism through which drastic calorie restriction affects aging. As scientists learn mo...an. We think this may be why mice live longer with calorie restriction, because of TOR pathway down-regulation." The two researchers plan to find out that very...

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