Saving For a Space Ship Posted February 17, 2017 Share Posted February 17, 2017 Old food shortens lifespan in animals Is reduced shelf food Ok ? https://www.newscientist.com/article/2121585-you-are-what-you-eat-old-food-shortens-lifespan-in-animals Quote You are what you eat – so does eating old food make you old? It sounds far-fetched, but experiments on mice, flies and yeast suggest that it might. The fundamental causes of ageing aren’t well understood. A leading idea is that throughout life, our bodies accumulate cellular damage. That might include oxidative damage to cells caused by by-products of aerobic respiration, and DNA damage – or a combination of those and other types. Vadim Gladyshev at Harvard University wondered whether organisms might also be able to acquire cellular damage from their food. Food is broken down and used as the building blocks for many cellular processes, so eating older organisms – which have more molecular damage themselves – might cause an animal to age faster than one that eats younger organisms with less molecular damage. To test the theory, Gladyshev and his team grew yeast fed on culture media made from old or young yeast and fed fruit flies food made from old or young flies. They also studied mice fed meat from old or young deer. The animals were fed their particular diet from early adulthood for the rest of their lives. The old diet shortened lifespan by 18 per cent in yeast and 13 per cent in flies. In the mice, the old diet shortened lifespan by 13 per cent in female mice, but there was no significant effect among males. Ageing food Gladyshev thinks that they may see an effect in both sexes if they increase the sample size – and believes the results seen in yeast, flies and female mice support his hypothesis. João Pedro de Magalhaes at the University of Liverpool in the UK isn’t so sure. He thinks the results could be explained by broader nutritional differences in the composition of old and young meat, rather than molecular damage linked to ageing. “There are different nutrients in the tissues from old animals and young animals,” he says. “Lamb doesn’t taste like mutton.” Gladyshev’s team tried to control for this in the mouse diet by ensuring the old and young diets had similar quantities of fat, carbohydrate and protein. But Gladyshev admits that they couldn’t ensure everything was the same. “This also could be a factor,” he says. Whatever the reason, we shouldn’t draw any conclusions about human nutrition from the findings, Gladyshev says. There was only a small effect on animals fed on old animals for their entire lives; people don’t tend to eat old animals and our diets are more varied. Instead, the secret to staying young may be to alter our metabolism in ways that reduce the overall damage we accumulate. Calorie restriction and the drug rapamycin, two approaches currently being studied for their life-extending propensities, might work in this way. “I think there could be many ways to extend lifespan,” says Gladyshev. De Magalhaes thinks molecular damage isn’t the whole story. Some aspects of ageing may be written into the programme of our development. “We don’t know exactly why we age – there is evidence pointing to a combination of molecular damage, but also other programme-like mechanisms at play,” he says. Link to comment Share on other sites More sharing options...
Bossybabe Posted February 17, 2017 Share Posted February 17, 2017 Give me some time to digest this. Link to comment Share on other sites More sharing options...
The XYY Man Posted February 17, 2017 Share Posted February 17, 2017 Mrs XYY is 53. Would I live longer if I munched on the rug of a 25 yr-old instead...? XYY The dog's kennel is not the place to keep a sausage - Danish proverb Link to comment Share on other sites More sharing options...
ChewingGrass Posted February 17, 2017 Share Posted February 17, 2017 Hate getting old rug stuck in my teeth. Link to comment Share on other sites More sharing options...
Economic Exile Posted February 17, 2017 Share Posted February 17, 2017 I have a belief that some might consider a bit whacky. IMO it seems to be a good idea to eat some fresh...just picked or killed food...as much as possible. It's easy to achieve even if you only have a windowsill to grow a few herbs and pick a bit off them and eat them right away. Don't ask me to explain, it just seems intuitive to me. Link to comment Share on other sites More sharing options...
DrMartinSanchez Posted February 17, 2017 Share Posted February 17, 2017 2 hours ago, The XYY Man said: Mrs XYY is 53. Would I live longer if I munched on the rug of a 25 yr-old instead...? The article says you should be eating babies. Link to comment Share on other sites More sharing options...
The XYY Man Posted February 17, 2017 Share Posted February 17, 2017 12 minutes ago, DrMartinSanchez said: The article says you should be eating babies. How dare you Doctor - I'm not the Queen Mother...!!! XYY The dog's kennel is not the place to keep a sausage - Danish proverb Link to comment Share on other sites More sharing options...
DeepLurker Posted February 17, 2017 Share Posted February 17, 2017 2 hours ago, The XYY Man said: Mrs XYY is 53. Would I live longer if I munched on the rug of a 25 yr-old instead...? I'm not sure if you'll live longer if you munch on the rug of a 25 year old. But I'm very, very certain that your lifespan will be seriously shortened if Mrs XYY ever finds out! Link to comment Share on other sites More sharing options...
The XYY Man Posted February 17, 2017 Share Posted February 17, 2017 4 minutes ago, DeepLurker said: I'm not sure if you'll live longer if you munch on the rug of a 25 year old. But I'm very, very certain that your lifespan will be seriously shortened if Mrs XYY ever finds out! You're not wrong there Lurks. I'll wake up with me b0llocks covering me eyelids if I ever try 'owt like that..! XYY The dog's kennel is not the place to keep a sausage - Danish proverb Link to comment Share on other sites More sharing options...
dgul Posted February 17, 2017 Share Posted February 17, 2017 24 minutes ago, DrMartinSanchez said: The article says you should be eating babies. No, it says Mrs XYY should be eating babies and that eating babies would offer no benefit for Mr XYY. Link to comment Share on other sites More sharing options...
SarahBell Posted February 18, 2017 Share Posted February 18, 2017 7 hours ago, Economic Exile said: I have a belief that some might consider a bit whacky. IMO it seems to be a good idea to eat some fresh...just picked or killed food...as much as possible. It's easy to achieve even if you only have a windowsill to grow a few herbs and pick a bit off them and eat them right away. Don't ask me to explain, it just seems intuitive to me. Anyone can sprout seeds. They're full of nutrients. The research might just show that yeast is something that needs to be grown from fresh yeast starter. It being the cell that grows - so old microscopic fungus (consisting of single oval cells that reproduce by budding,) will reproduce as old if it starts off old. Luckily lamb and sheep take in fresh nutrients to grow (Assuming they are grown outside) " grew yeast fed on culture media made from old or young yeast " Link to comment Share on other sites More sharing options...
oracle Posted February 18, 2017 Share Posted February 18, 2017 14 hours ago, SarahBell said: Anyone can sprout seeds. They're full of nutrients. The research might just show that yeast is something that needs to be grown from fresh yeast starter. It being the cell that grows - so old microscopic fungus (consisting of single oval cells that reproduce by budding,) will reproduce as old if it starts off old. Luckily lamb and sheep take in fresh nutrients to grow (Assuming they are grown outside) " grew yeast fed on culture media made from old or young yeast " studies show that feeding mice stuff other than the vegetable matter they are used to has a detrimental effect on health. no sh1t sherlock!, we went through this crap before with cjd and bone-meal in cattle feed. Link to comment Share on other sites More sharing options...
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