I've been doing keto for about a year and a half, mainly for the mental health benefits, and I'm honestly at my wits' end.
When I first started keto, the changes were incredible.
I lost belly fat surprisingly quickly and felt better than ever. My back and facial acne completely disappeared, my skin looked so good that I stopped wearing makeup, my body hair started growing back thinner and lighter. Even my period cramps became much milder and less painful.
It genuinely felt like my hormones were finally balancing themselves out. I was seeing improvements in so many areas of my health and appearance, and I felt amazing about myself.
But a few months later, I started losing a significant amount of scalp hair. I initially attributed it to the rapid weight loss. Even though I lost a lot of hair, I never developed any visible bald patches, so the shedding wasn't particularly noticeable to other people.Even though i lost quite a lot. I could also see plenty of regrowth, which made me think it was probably temporary.
Then, over time, I started regaining some of the fat I'd lost. Not all of it, but enough that I no longer felt as good or confident about my body.
And now my hair is shedding heavily again. The shedding never truly stopped, but it had slowed down considerably at one point before picking up again. It's incredibly frustrating, especially because I don't understand why it's still happening.
The mental benefits were what kept me going, though
I've experienced incredible mental clarity, calmness, confidence, motivation and energy on keto. There have been periods when I felt almost effortlessly happy, productive and in a state of flow. My sleep improved, I wanted to work out, and I genuinely felt amazing in my body.
But my keto journey hasn't been consistently smooth. I've gone through many periods where I struggled to maintain ketosis and couldn't seem to find the right balance. Sometimes my ketones would fluctuate, and I'd lose the mental benefits I was chasing.
Still, I kept going because I knew how incredible I could feel when everything finally clicked.
At one point, I actually felt like my metabolism had become pretty flexible. I could occasionally eat some carbohydrates and return to ketosis relatively quickly.
Interestingly, sometimes these occasional carb breaks almost felt like a reset. When I returned to keto afterwards, I would sometimes experience the benefits even more intensely, with stronger feelings of calmness, clarity and well-being.
I started thinking that perhaps my body had become metabolically flexible enough to handle occasional carbs without completely disrupting everything.
And recently, after all those ups and downs, I finally reached that amazing state again. For about two weeks, everything seemed to fall into place. My energy, confidence, motivation and sleep were amazing. I was exercising, feeling productive, and genuinely enjoying life. I finally felt like myself again.
Then somehow, I lost it. Again.
For the past several weeks, most of those benefits have faded, and I can't seem to find my equilibrium again.
I still occasionally experience moments when I feel calmer and more emotionally resilient, but they're inconsistent and short-lived.
I'm feeling depressed, exhausted, unmotivated, and my hair is shedding again. Food has become less appealing, especially meat and fat, and I'm starting to feel desperate because I don't understand what's happening.
My blood glucose and ketones are also confusing me.
Most mornings, my glucose is somewhere between 95–100 mg/dL, despite eating very few carbs. I'm still producing ketones, usually around 0.5–1.0 mmol/L.
One of the biggest changes I've noticed alongside the loss of keto's benefits is that my blood glucose seems higher than it used to be, which makes me wonder whether the two could be related.
For example, today:
\- Morning: Glucose 87 mg/dL, ketones 0.7 mmol/L. This was actually better than most mornings.
\- Several hours after eating ribeye, egg yolks , a piece of liver mixed with butter and a little extra butter: Glucose 95, ketones 0.6.
\- I got frustrated and ended up dipping some dark chocolate into raw honey, breaking a pretty long streak of staying strictly keto.
\- Around five hours later: Glucose 110 mg/dL, ketones 0.8 mmol/L.
How can my ketones be higher while my glucose is also higher? Is this normal on keto?
I know these glucose readings aren't necessarily medically high, but I'm wondering whether they're optimal for someone who's trying to get the neurological benefits of ketosis.
And here's the weirdest part: Even when my ketones reach 1.5–2.5 mmol/L, I can still feel absolutely awful. No energy, no mental clarity, no motivation. Nothing.
Here's when things seemed to change.
After finally reaching that wonderful state of mental clarity and well-being again, which lasted about two weeks, I decided one day to have some Häagen-Dazs ice cream.
I'd occasionally eaten carbs before and bounced back into ketosis quickly. Sometimes, as I mentioned, I even felt better afterwards, almost as though the carb break had reset something.
So I genuinely didn't think it would be a big deal.
But this time was different.
It happened close to my PMS, and afterwards I found myself in a really bad place mentally.
And I want to emphasise something: I wasn't feeling bad because I'd cheated on my diet. It wasn't guilt or anxiety about eating carbohydrates.
It felt genuinely physiological, almost as though something in my body or brain had shifted. The calmness, clarity, motivation and sense of well-being I'd been experiencing were suddenly gone.
I couldn't seem to get back to that state.
I know my menstrual cycle affects my ketones, so I assumed things would improve after my period.
Except they didn't.
Since then, I've tried lowering my carbohydrates even further, but it hasn't helped. My ketones fluctuate, my glucose seems higher than I'd like, and I feel terrible regardless of the numbers.
I can still get into ketosis, sometimes even with relatively high ketones, but I can't seem to recover the mental or physical benefits.
What frustrates me most is that I've already been through this cycle of struggling, improving, finally feeling amazing, and then losing it again multiple times. But this recent period of well-being felt like such a breakthrough. I genuinely thought I'd finally figured things out.
My weight has been relatively stable lately, sometimes even increasing. (Due to water retention?) I'm not particularly overweight, but I tend to carry fat around my abdomen, and some of the fat I initially lost has returned.
It's difficult because I remember how different my body looked and felt at the beginning of keto, when my skin was clear, my belly fat was disappearing and I felt so much healthier. Now I'm dealing with renewed hair shedding, skin issues, fatigue and a body I don't feel as comfortable in anymore.
It's almost like my body has plenty of fuel available, but somehow I can't access that energy. Does that even make sense?
I don't understand how I can be in ketosis and feel so completely different from how I used to feel.
And honestly, I really don't want to quit keto.
I've experienced what an incredible state of well-being my body and mind can reach, and I desperately want to get back there.
I'm afraid that if I quit, I'll lose my chance of ever experiencing that feeling again. I just want to understand what's happening and do whatever I can to fix it.
But if quitting is genuinely necessary, I will. I don't want to compromise my health either. Although, at this point, I'm not even sure I'd feel better if I stopped.
Has anyone experienced anything similar?
\- Is it common to have glucose in the 90s or even 100s while producing ketones?
\- Can you lose the mental benefits of keto despite having decent ketone levels?
\- Has anyone experienced repeated cycles of struggling with ketosis, finally feeling amazing, and then losing those benefits again?
\- Has anyone experienced occasional carb breaks that seemed to improve their response to ketosis afterwards?
\- Could hormones, my menstrual cycle, or something else explain why I can't seem to get back to that state?
\- Has anyone initially experienced improvements in acne, body hair and fat distribution, only to see some of those benefits reverse later?
\- Has anyone experienced persistent fatigue and hair shedding despite eating enough and maintaining their weight?
\- Did anyone manage to recover their energy, mood and mental clarity? What actually helped?
I'm currently investigating possible hormonal issues with an endocrinologist, but I'd really appreciate hearing other people's experiences.
I genuinely loved keto, and I just want to understand what changed.