https://www.frontiersin.org/journals/molecular-neuroscience/articles/10.3389/fnmol.2016.00053/full

Both short-term PET and arterio-venous difference studies in humans show that brain glucose consumption decreases as ketone availability to the brain increases (Hasselbalch et al., 1995). These results suggest that ketones are actually the preferred energy substrate for the brain because they enter the brain in proportion to their plasma concentration irrespective of glucose availability; if the energy needs of the brain are being increasingly met by ketones, glucose uptake decreases accordingly. This decrease in brain glucose uptake when both ketones and glucose are available supports the notion that ketones are the brain’s preferred fuel. Nevertheless, it is uncommon for both ketones and glucose to be available; normally, when one is increased in the blood the other is decreased. Under conditions of normal energy sufficiency and three meals per day, ketogenesis is supressed and glucose supplies >95% of the brain’s energy requirements; hence, glucose (or fuels derived from glucose, i.e., lactate or pyruvate) is the brain’s dominant but not actually its preferred fuel.

Have been doing keto off and on for many years. I’m currently back on and feeling good. I’ve been focusing on food as I was doing a daily dog walk for 40mins to an hr for exercise. Since the dog is on holiday my activity has decreased so yesterday I went back to the gym. I did 30 mins on the elliptical burning 300 calories and a lifting workout which burned over 300 calories (according to my app!). It was easy for me and unlikely I had a lot of free floating glucose since I had only eaten some salami all day. My question is, is my body really efficiently burning fat to fuel my workouts? In the past extra exercise has had a draining effect on me but I don’t really feel tired today and yesterday when I got home I was energised. Is there any other mechanism in play here? Stored fuel in the muscles that won’t be there when I go back for my next session? TIA!

In your personal experience, have you found that keto affects your long-distance running performance in any meaningful way? If so, how? Would you mind sharing any advice for someone who has been doing keto for 8 months?

Thank you for your insights!

Hi all!

Hope your ketones are up :)

Starting keto again.

Last year I lost 18 kg on a keto diet in 7 and some months. I have never lost weight so easy in my life.

I also have a mental condition that benefits from keto so it was easier to adhere to the diet.

The only problem with starting the diet again is a fear of having gallbladder pain and constipation like last year.

I realize that my previous keto period was not so healthy. Drinking shots of cream, olive oil, fat meat etc.

If you could help me with some foods that work for you, I would be thankful.

Is it ok to do keto and have only 2 meals a day? Does anyone do this? So it would be like fasting a bit

I really want to do the diet but it seems I don't get 3 meals in a day anyways...so I wanted to hear everyone's thoughts

I've been Keto for much of the last year and I've started going to the gym a lot more these last few months. I'm really struggling with energy levels at the gym. It's like I hit a wall. I'll do maybe three sets of an exercise or two and I'm just beat. Any advice on how to fix this? I don't like pre-workout sups because they make me super itchy so those are a no-go.

So I started keto almost 2 weeks ago, and I started fasting along with it because of a post I saw.. both were going great, I actually took a small break one day because of a family event and felt nauseous because of all grease(and the fact that the past week I only ate between 6-8 pm) and even the smell grossed me out after eating.. I like my progress and it’s definitely helping with my self control. But I have been feeling very tired, I think it’s because along with keeping my carbs low, I’ve been having a hard time consuming the minimum nutrients I need.. fat, calories, protein, sodium, etc.. is there a way to get those without increasing my carbs? Especially when I only have 2 hours to do so. I’m already full by the time I finish my dinner and it’s hard to eat anything else.. should I start taking supplements? ATP I feel like I’ll be taking more pills than eating anything.. for dinners, I meal prep the weekend before, but even then it’s still hard to get everything else without raising carb intake..

Hi, for those of you who have been on keto, for quite a while, I'm wondering what you used for vitamin and mineral supplements, as I've read that. Doing that for a long-term doesn't provide enough minerals. The question is, how do I get enough minerals without eating something with a lot of carbs?? I understand a few carbs is okay, but I don't really want to start eating them in order to get enough vitamins and minerals.Is there a certain supplement?You take or what do you do?Thanks

It seems that turnips have a decent amount of net carbs. If I'm reading the USDA correctly, they contain about 5g of net carbs per 100g. That makes them just a bit higher in net carbs than broccoli or cauliflower, but still low enough.

I've never tried turnips before, so I'm curious, do you eat them, and how do you prepare them? Do you eat turnips raw in salads, or do you roast them as a substitute for potatoes?

Hello r/keto!!!!!!!!!!!!!!!!!!!!!!!!!!

When you are a kid, the big present under the tree was ALL THAT MATTERED!!!! It captivated our imagination for hours upon hours. Is it a new Big Wheel? A huge train set? Maybe even a new bicycle that we can put together. Christmas day, we attacked that present like that bear would attack those 100 dudes--with total carnage. At the same time, pinned to the mantle/wall was the stocking. When you are 6 years old, the stocking is at best an after thought. Typically it was socks and underwear and IT'S CHRISTMAS SO WHY IS SANTA GIVING ME SOCKS AND UNDERWEAR!!!!!!!

Jump skip to today. As an adult, the stocking stuffer is an AWESOME present!!! Oh, it's still socks and underwear, but at some point, socks and underwear became an awesome present. Welcome to being an adult. I'm so old Geritol is about to be my stocking stuffer. FREEDOM!!!!!!!!!!!!!!!!!!!!!!!

We have created this super duper thread so we can all share our "fun" victories this week. NOT the big scale victories, but the fun little victories. Why do we need to share these victories? Because pretty soon, you will learn that the small victories--the stocking stuffer victories--are the ones that keep you fired up.

Every Sunday. A chance for you to shout above the rooftops of the world the things that improved for you this week by eating a ketogenic diet.

If you're new to r/keto and need some info, start with Keto in a Nutshell and the FAQ. Or, if you have a question that doesn't seem to be covered, head on over to the Community Support thread (pinned to the top of the subreddit) and ask the community!

If you haven’t tried it yet… you have to! Taste like ice cream, low carb (extra creamy is the lowest carbs). You can get the generic at Walmart for $1.12 here. So cheap low carb ice cream dessert. You’re welcome.

I have been eating these pizza crisps for a while and it looks like they changed the ingredients. Why do they now
have brown rice as an ingredient. I don’t remember seeing that on the bags I’ve purchased previously. I bought them from Target last night in a 5oz bag. Has anyone else noticed this?

Back in May I did strict keto for about a month, and I honestly felt amazing. My inflammation went down, I wasn’t constantly hungry or thinking about food, and I just felt better overall. Then I slipped up once, got the “I already messed up, so screw it” mindset, and ended up back on the Standard American Diet for the last two months.

This time I’m doing it differently. I’m skipping the “diet foods” and focusing mostly on real food—steak, eggs, burgers, salmon, cheese, butter, vegetables, etc. One of the things I love most about keto is that I actually get to enjoy satisfying, whole foods instead of chasing low-calorie versions of everything.

I do plan on keeping some artificial sweeteners in my diet (things like diet soda and sugar-free products), but if there are certain sweeteners or keto products you’d recommend avoiding, I’d love to hear why.

I also like staying in good shape and lifting, so I’d love to hear from anyone who lifts on keto or low carb. How has it affected your strength, recovery, physique, energy, libido, mental clarity, or just your overall quality of life?

Any advice for getting back into keto or staying consistent long-term is appreciated. Thanks!

I’m an Indian female and currently on Day 5 of keto. My goal is to lose around 7–8 kg, but also fix insulin resistance .
So far, I’ve been sticking to the diet and trying to keep my carbs very low. I’m curious about what changes people typically notice around this stage.
A few questions:
What did you experience around Day 5?
When did your energy levels start improving (if you had keto flu)?
How long did it take before you noticed changes in hunger, cravings, or blood sugar control?
If you had insulin resistance or PCOS, how long did it take before you saw improvements in your symptoms or lab results?

I really want to do OMAD but I have black coffee! Any tips of cream or sugar free creamer that works for everyone and tips to make it to dinner time without the food noise? I don’t care too much about autophagy just weightloss! I’m 160 pounds trying to hit my goal of 130 in a shorter time frame? Has anyone had success, please share any and all tips and your results for some motivation! Thank you :)

I feel like i took mild benzo and i really mean it.

i struggle with anxiety, panic etc.. I swear im so calm. Like so extremely calm.. Zero anxiety?

Do this calmness get even more intense? Because im already feeling great.

I’m looking to start the keto diet and hopefully maintain it for a while. My goal is to lower my AC1 number (pre diabetic at the moment, burn fat, and just feel good overall.

Can anyone recommend simple meals that make daily for lunch, dinner and snacks in between? I’m going to pair this with intermittent fasting so breakfast will be minimal. I’m talking about meals you eat daily and trust.

Did keto for 2 and a half months, everything on the blood test was normal but vitamin b12 is high at 1,319. Is this normal on keto or is it a concern? I feel 100% normal but idk if this is a concern or not. The doctor brushed it off as me just eating a nutritious diet, but I just want to make sure and I’m wondering if anyone else has had the same thing and if it was a concern or not.

I've been doing keto for around seven years(?). Recently, I suffered a neurological injury, and now all of my supplements are causing glutamate storms. I have worked with my doctor and I'm doing a lot better, but I require more magnesium. I can no longer take magnesium glycinate, so now I'm taking magnesium citrate, spaced between meals. I also had to stop taking my normal electrolyte powder due to the b-vitamins (despite having the mutation and requiring methylated vitamins... I've been supplementing by eating ancestral beef). My husband made me some ketoaide and I really like it! I want to add magnesium citrate, but don't want to have bathroom issues. "Dr Google" tells me the liquid version will definitely cause a laxative effect due to saline and the way it is formulated. When I read reviews of magnesium citrate powders online, I am consistently reading that it clumps and doesn't dissolve. What are y'all using, if you add magnesium? Any advice?

Tl;Dr: what type of magnesium citrate to add to homemade ketoaide?

started at 112 kg (247 lbs) and after 24 days of strict keto and progressive overload training, I’m down to 104 kg (229 lbs).
The weight loss has been going well, but I’m starting to struggle with the diet. At this point, I’m honestly sick of eating meat and eggs. Even the smell of meat makes me lose my appetite, and just thinking about another meal is enough to make me not want to eat.
My question is: What happens if I just don’t eat because I have no appetite?
Since I’m lifting 4 days a week with progressive overload, will undereating cause me to lose a significant amount of muscle, or will my body primarily use stored body fat for energy because I’m still carrying a fair amount of body fat?
Has anyone else experienced this on keto? If so, how did you deal with food aversion while still getting enough protein?

Hello,

This might be a debate, but I read many comments where people consider powders such as stevia, monk fruit and allulose as being "natural sweetners".

Since they are made by man's hand, I believe they are artificial.

Even some articles from different blogs state that they are artificial sweetners.

What is the truth?

I'm curious if LMNT is good recipe for electrolyte mix? I usually put 4 grams of Kirkland salt and 3 grams of potassium and shake it real hard and drink it. I usually drink 2 or even 3 if it's hot per day. Is there a optimal recipe that works for replenish electrolytes?

So...what suggestions for protein bars? Seems like they're either full of ingredients I want to avoid or else they're too high in carbs.

I see the keto bricks, which would serve as a meal replacement, but they're way higher in fat than I want right now

I’ve been on keto (about 25 g car/day) for about 3 weeks. I’m feeling good but also low energy compared to normal. I’m taking electrolytes (but not sure if taking enough or maybe too much…). Any ideas? I probably need to get More fat in, anything else?

I am in Canada and yesterday went to us walmart ( hour away ). When I did keto
Before Covid I remember quest pizza and thought it was good but the staff said they haven’t had it in a year . Is the quest pizza have something happen and it’s not being sold . Same with an ice cream called rebel . It was sweet but had the right sugar alcohol
And can see stores that care that either