Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

Diet that mimics fasting appears to slow aging

news.usc.edu

Post reply on HN
Print view View original

71–80 of 305 posts

Re: Diet that mimics fasting appears to slow aging

#71

Post by Fiahil »

Rainymood wrote: post #38

I currently intermittent fast by skipping breakfast + lunch, partially because I'm lazy, partially because it allows me to easily eat 'all my calories' in the end of the day. I really like this as it provides a 'buffer' for unexpected food, such as random cake, or random lunches with colleagues etc. Has anyone here actually ever TRIED fasting a full 24h day? I have. I HATED it. Well, the fasting itself wasn't that ba…

It happened to me several times in the past, when I was so focused on what I was coding/debugging, that I forgot to eat multiple times in a row.

Now, when I don't want to be disturbed by a growling stomach, I usually give him an apple just to keep him busy.

Re: Diet that mimics fasting appears to slow aging

#72

Post by benatkin »

stevebmark wrote: post #29

Ketosis also "mimics fastings", the main metabolic difference being nutritional ketosis is 0.5 - 3 mmol/L, while fasting is 3 - 5 mmol/L (betahydroxybuterate in the serum). The benefits of ketosis may also add longevity, possibly with similar mechanisms to fasting. It's likely intermittent fasting put the subjects of the study into mild ketosis. Bottom line: Ketosis may have benefits similar to fasting in terms of ag…

Aren't most ketogenic diets high in red meat? What about cancer?

http://blogs.discovermagazine.com/d-brief/2015/01/02/red-mea...

Re: Diet that mimics fasting appears to slow aging

#74

Post by hrehhf »

exelius wrote: post #53
stevebmark wrote: post #29

Ketosis also "mimics fastings", the main metabolic difference being nutritional ketosis is 0.5 - 3 mmol/L, while fasting is 3 - 5 mmol/L (betahydroxybuterate in the serum). The benefits of ketosis may also add longevity, possibly with similar mechanisms to fasting. It's likely intermittent fasting put the subjects of the study into mild ketosis. Bottom line: Ketosis may have benefits similar to fasting in terms of ag…

Can confirm, keto diets burn weight like a motherfucker. They're also reasonably easy to maintain, since it's pretty easy to order a cheeseburger without a bun and eat it with a knife and fork. Also, bacon and avocado are a delicious combination, and keto says they are ok. I dropped 40 lbs in under 6 months on a keto diet, and built muscle while doing it. But I had to stop the keto diet because it makes me stupid whe…

> Ketones (what your body burns for energy when there are no sugars available) don't penetrate to the brain

[0] says that this is false. Ketones do go into the brain and the brain does use them for fuel.

[0]http://proteinpower.com/drmike/2007/05/22/metabolism-and-ket...

Re: Diet that mimics fasting appears to slow aging

#75

Post by exelius »

MCRed wrote: post #67
exelius wrote: post #53

Earlier quoted context omitted.

Can confirm, keto diets burn weight like a motherfucker. They're also reasonably easy to maintain, since it's pretty easy to order a cheeseburger without a bun and eat it with a knife and fork. Also, bacon and avocado are a delicious combination, and keto says they are ok. I dropped 40 lbs in under 6 months on a keto diet, and built muscle while doing it. But I had to stop the keto diet because it makes me stupid whe…

Did you try taking a multi-vitamin? I've seen advice to get magnesium and potassium into your system, so I started using lite-salt. In the early days of my diet I was always tired (slept for 24 hours) and started having a constant headache-- this is after getting into ketosis and being there for a couple weeks. But the lite salt cured it within a day. (I wasn't able to get the right form of magnesium yet, but have be…

Yeah, I did the lite salt thing, I was taking vitamins, etc. I physically felt fine; but I was noticeably dumber. Also, the relief after eating something really carb-heavy was pretty immediate.

Re: Diet that mimics fasting appears to slow aging

#76

Post by exelius »

hrehhf wrote: post #74
exelius wrote: post #53

Earlier quoted context omitted.

Can confirm, keto diets burn weight like a motherfucker. They're also reasonably easy to maintain, since it's pretty easy to order a cheeseburger without a bun and eat it with a knife and fork. Also, bacon and avocado are a delicious combination, and keto says they are ok. I dropped 40 lbs in under 6 months on a keto diet, and built muscle while doing it. But I had to stop the keto diet because it makes me stupid whe…

> Ketones (what your body burns for energy when there are no sugars available) don't penetrate to the brain [0] says that this is false. Ketones do go into the brain and the brain does use them for fuel. [0] http://proteinpower.com/drmike/2007/05/22/metabolism-and-ket...

I believe you -- most of what I know about keto I found on reddit so I treat it with a grain of salt. But I also know how it made me feel, and I can't do the diet and hold down the job I currently have.

Re: Diet that mimics fasting appears to slow aging

#77

Post by throwaway12309 »

voidlogic wrote: post #57

Previously it has been found that eating a ketogenic diet ( I lost 40 lbs on keto eating mostly (by volume) non-carby veggies and mostly (by calories) fat, along with 80-120g of protein per day. I'd really like to see their complex diet tested against a well formulated ketogenic diet.

ok, since this is posted here every freaking time there is an article about dieting in HN, let me stress this out:

A Ketogenic diet (per the actual medical definition and not from fitness gurus) is not low carb, adequate protein and high fat. it is high fat, little to no carbs and low protein. From medical recommendations, calories from fat should be in the 85-90% range. Most of the articles you read about the benefits of ketogenic diet is the MEDICAL definition and not the fitness definition.

Also, protein as a nutrient creates a similar insulin response as carbs.

(nothing against keto diets, but they just seem to be the hip diet of the moment and annoys me when this keeps being stated)

Re: Diet that mimics fasting appears to slow aging

#78

Post by krmmalik »

mrfusion wrote: post #68
krmmalik wrote: post #39

Appropriate article since I just completed a fast of 19hrs. No water and no food. Muslims do this every year. Last year, on average our fast was just over 18hrs. We fast each day from sunrise to sunset for 30days. Of course, we as a group of people have been doing it for over a thousand years. Cant say we started it due to science, but cant say we noticed the lack of aging either. ;)

Why 19 hours? Are you in a northern latitude? Makes me wonder would people in Antarctica not fast at all?

I'm in the UK. Your observation regards antarctica is correct.

Re: Diet that mimics fasting appears to slow aging

#79

Post by heydenberk »

bradleyjg wrote: post #61
krmmalik wrote: post #39

Appropriate article since I just completed a fast of 19hrs. No water and no food. Muslims do this every year. Last year, on average our fast was just over 18hrs. We fast each day from sunrise to sunset for 30days. Of course, we as a group of people have been doing it for over a thousand years. Cant say we started it due to science, but cant say we noticed the lack of aging either. ;)

This is a really interesting comment. It's a sort of natural experiment. I wonder if there's any observational studies on the effect of Ramadan fasting on health. Religious Jews do some fasting, but they are two 25 hour fasts and a few other 12 hour fasts all spread throughout the year.

I imagine that these impacts are varied. For people of poor health with a diet of meager nutrition, or for diabetics with irregular blood sugar levels, Ramadan fasting may lead to worse health outcomes. For people who are not diabetic but at risk of becoming so, Ramadan fasting may lead to better health outcomes. Just a guess.

Re: Diet that mimics fasting appears to slow aging

#80

Post by [deleted] »

novaleaf wrote: post #59
ams6110 wrote: post #50

Anecdotally, when I was a kid I had goldfish at one point. I noticed that if they were fed daily they didn't live very long. If they were fed once or twice a week they seemed to live forever.

i too remember that, but for some kind of tropical almost-transparent freshwater fish. Their lifespan was supposed to be about 2 years, but we fed it once a week and it lived perhaps 7 years, until it jumped out of a bowl and suffocated while we were cleaning it's tank!

[deleted]
Post reply on HN