131–140 of 251 posts
High amounts shrink the brain, increase dementia risk. https://www.tandfonline.com/doi/abs/10.1080/1028415X.2021.19... And very few people drink 1-2 cups. The travel mugs and typical coffee place cups are close to this danger range.
I tried this! I went completely caffeine free for over a year and was... fine? But way more tired all the time, and generally having trouble focusing on tasks. In my particular case, I suspect caffeine is a self administered coping mechanism for mild ADHD tendencies, and without that I became much more sensitive to the food I was eating and my changing energy levels throughout the day. Eventually I realized I had sto…
The graph titled "Caffeine Accumulation With Long Half Life" is weird. Isn't that not how half-life works? A higher blood level should mean faster elimination, but here it acts like the baseline changes each day. No matter how slow the user's clearance is, the ratio should always take the same time to get halved. Edit: actually this graph implies that people like the author would end up poisoned by a lethal dose of c…
Caffeine elimination, like all metabolic processes, isn't quite linear. At low levels the elimination rate is proportional to the caffeine concentration, so you get the "half life" exponential decay curve. But at high levels, elimination is limited by liver enzymes and decay is approximately linear. So yes, there is some level of caffeine intake that exceeds the max rate the liver can remove it and concentration woul…
I quit Coffee one month each year (Ramadan while fasting). It has the effect of resetting my tolerance to caffeine. The first coffee after Ramandan feels more like Cocaine than Caffeine, almost like a superpower. However, I have to say, I don't see any difference in sleep quality with or without coffee. I just make sure only to drink coffee in the morning.
Doesn't that make the first few days of fasting miserable? Have you tried progressively reducing the dosage for a few weeks in preparation?
When I didn't the headaches were terrible in the first few days of fasting.
I quickly picked up on too much of it affecting my sleep though, I guess i had a decent baseline to compare to. so I quickly limited it to just having one in the morning workdays, and occasionally one on weekends. I still have days where I don't drink any, and I don't notice any difference in sleep.
I have been drinking a lot of coffe my entire adult life. Many cups of really dark coffee. But a cup is small . And dark coffee doesn't necessarily mean loaded with caffeine. Nothing prepares you for the kind of watery-yet-caffeine-loaded juice you get at a US coffee shop. It's like they think someone would enjoy drinking a half liter hot beverage, and get half a lethal dose of caffeine. Even though I drink 5-10 cups…
> I don't think many are reporting bad effects on sleep from drinking coffee only in the morning. The article is precisely about how drinking coffee, even just in the morning, absolutely can negatively affect your sleep.
To add another anecdote: I drink minimum one small pot of coffee a day (a pour-over I make with my wife, 30g/450g beans/water), plus a moka pot or two in the afternoon, or a 15g pour-over. And 1-3 espresso shots if I go into the office. I consider the coffee experience positively euphoric. Almost spiritual. Certainly ritual. I would never give up the time of sitting with my wife for half an hour to an hour each morni…
> And 1-3 espresso shots if I go into the office. I consider the coffee experience positively euphoric. Almost spiritual. As someone who doesn’t consume caffeine, this sounds a lot like addiction. You can keep the ritual and ditch the caffeine by drinking decaf if you want.