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Machine Learning and Ketosis

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Re: Machine Learning and Ketosis

#231

Post by aab0 »

ariel-faigon wrote: post #76
aab0 wrote: post #32

Earlier quoted context omitted.

Well, he also disables the holdout set (`--holdout_off ariel.train`), so between that and not reporting the uncertainties and his absolutely tiny dataset with high measurement error and the low prior probability that any of these effects could be that big... Nah. It's just overfitting noise. I tried to run the makefile, but apparently the version of Vowpal Rabbit that ships on my Ubuntu (7.3) is so outdated that it d…

Thanks so much for all the excellent comments. There was definitely an over-fit with 4-passes. No more. I've updated the Makefile to run only one pass, changed the options so it runs with older-version vw, Fixed misspellings of 'gioza', removed 'mayo' which found itself on the wrong side because it appeared only twice and always alongside the bun and regenerated the chart. All the main conclusions remain intact. In t…

I don't think it matters whether you run 4 passes or 1 pass, it's still going to overfit. You can run an online linear regression in a single pass too, but that doesn't magick away the uncertainties. The results are still going to be garbage, and any effects you get are due to your health-consciousness and not any specific dietary choices you make (how could it be, when the data is so weak and noisy that each item can easily flip signs?).

Re: Machine Learning and Ketosis

#232

Post by ht85 »

ghshephard wrote: post #100

What's interesting about this post isn't the actual diet advice, but the guidance to track and see what works for you. Different people react to fasting differently - some continue to burn calories and drop weight, some just go into starvation mode, have their BMR crash through the floor, and end up exhausted all the time because their body is fighting like crazy to conserve energy. Likewise - some people, when they…

When you say BMR crash, what exactly do you mean? In what proportion?

While I understand that going on a diet can make you feel less energetic, depressed and a variety of other things, the "base" in BMR is there for a reason.

I've seen many people suggest that your BMR could significantly lessen, but I've never seen anything scientific demonstrating that, and all our understanding points to it not being possible, unless you stop breathing and your blood stops pumping.

Maybe a diet could interfere with your exercise regimen and be counter-productive, but for someone who is completely sedentary and who's TDEE is close to his BMR, I don't think it could significantly go down.

Re: Machine Learning and Ketosis

#234

Post by smokedoutraider »

A couple a years ago I did keto for 8 months. During that time I lost 31 kg. While this diet was amazing for losing weight it really affected my concentration negatively, to the point where I was forced to drop the diet because it was simply interfering with my performance at work. It's a real shame though, as I've never been able to find a diet as easy and effective since.

Re: Machine Learning and Ketosis

#236

Post by readme »

zatkin wrote: post #131
ghshephard wrote: post #100

What's interesting about this post isn't the actual diet advice, but the guidance to track and see what works for you. Different people react to fasting differently - some continue to burn calories and drop weight, some just go into starvation mode, have their BMR crash through the floor, and end up exhausted all the time because their body is fighting like crazy to conserve energy. Likewise - some people, when they…

I do a lot of rock climbing, so most of my body is muscle. I'm currently floating at 170 lbs, but would love to lose 10 lbs so I can get up the wall faster. I think that fasting might be foolish because my body needs energy for climbing. In fact, if I wait too long after eating lunch, I tend to get really hungry during climbing and I start yawning a lot (not sure why).

Just fast on rest days, or don't climb those days. Go for a a short/easy hike or something. I do a lot of cardio. Some days I will burn 5000+ cal. I am absolutely unable to lose weight or restrict calories on those days because I always feel insatiable hunger.

Re: Machine Learning and Ketosis

#237

Post by Tharkun »

jokamoto wrote: post #228
khattam wrote: post #221

Earlier quoted context omitted.

> It's pretty easy to lose 40-50 pounds and end up being much less healthier than you were before Maybe if you amputate your legs or catch AIDS or syphilis in the process. Otherwise, I can't see how losing 50 pounds will leave you less healthier than before.

Two possible ways: Being underweight is dangerous, just as being overweight is dangerous. Instead of heart disease and joint damage, you end up with osteoporosis, anemia, etc. Losing weight without paying attention to nutrient intake and balance can have similar effects, even if you'd be at or above healthy weight losing 50lbs.

Erhm, yeah, good luck losing that amount of weight easily and ending up underweight...

Re: Machine Learning and Ketosis

#238

Post by GirlsCanCode »

ghshephard wrote: post #100

What's interesting about this post isn't the actual diet advice, but the guidance to track and see what works for you. Different people react to fasting differently - some continue to burn calories and drop weight, some just go into starvation mode, have their BMR crash through the floor, and end up exhausted all the time because their body is fighting like crazy to conserve energy. Likewise - some people, when they…

Starvation mode? ha! Nobody gets fat from eating fewer calories than they burn. Fat people simply lie about food intake.

Re: Machine Learning and Ketosis

#239

Post by GirlsCanCode »

khattam wrote: post #221
ghshephard wrote: post #100

What's interesting about this post isn't the actual diet advice, but the guidance to track and see what works for you. Different people react to fasting differently - some continue to burn calories and drop weight, some just go into starvation mode, have their BMR crash through the floor, and end up exhausted all the time because their body is fighting like crazy to conserve energy. Likewise - some people, when they…

> It's pretty easy to lose 40-50 pounds and end up being much less healthier than you were before Maybe if you amputate your legs or catch AIDS or syphilis in the process. Otherwise, I can't see how losing 50 pounds will leave you less healthier than before.

Fat people are always trying to justify their dangerous lifestyles. Sadly, they get a lot of sympathy here. You, of course, are correct. It is always bad to be overweight.

Re: Machine Learning and Ketosis

#240

Post by philip1209 »

will_brown wrote: post #77
mrfusion wrote: post #33

Earlier quoted context omitted.

What do you mean about insulin?

I am very interested as well and hope there is a response. Since he was working with an MD, my guess is as follows: insulin is the devil. Whereas if you look at the old FDA food pyramid and the new food plate, carbs/sugars/fruits take up a significant percentage of the recommended daily diet. Take fruit for example, prevailing norm would be fruit is healthy (especially in its natural state where it is accompanied by…

Basically this. I think it's more about insulin spiking, though, because insulin stops healthy people on a nutritional ketogenic diet from going into diabetic ketoacidosis.
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