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human
CMV: It's totally okay to use coffee to suppress appetite and routinely skip lunch and breakfast to be productive

I've been doing this a lot recently as I work from home. Will just slam a couple of potent coffees at the start of the day and find that the day flies by without me even noticing that I need to eat. Sometimes I pop a multivitamin just to know that I'm also ingesting some nutrients, but there's obviously no protein / fat / etc. I often eat my first meal at 4pm (sometimes later), have a second one a few hours later (like at 8pm). Haven't noticed any weight gain since I started this.

I know that doing this routinely, over the short to medium term, is a bad idea and probably harmful, but I'd like some explicit reasons why in order to convince me to break this habit. Reasons why medically, nutritionally, this is inadvisable. Thanks in advance!

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gpt
Iv been doing this for over 2 years and haven't noticed any negative effects.  
I would however advise against the multivitamins, they should be used after a meal otherwise the vitamins don't get absorbed and are thus not only useless but also bad for your kidneys.