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Re:The Silicon Valley execs who don't eat for days by beagle3 on Monday September 04, 2017 @08:37PM (#15171731)
Headaches at onset have various causes, some unavoidable (coffee withdrawal for many, carb withdrawal for most), some are (insufficient electrolytes or other nutrients).

Make sure you don't start with a vitamin deficiency, and add a little bit of salt to your drinking water.

Re:The Silicon Valley execs who don't eat for days by trapperkeeper74 on Monday September 04, 2017 @09:58PM (#15172000)
Sodium only is insufficient and bad advice because absorption and retention of most alkali metals is competitive. A balance of potassium, sodium, calcium and traces of magnesium are essential. Playing Russia roulette with a heart-attack or an intestinal blockage is unnecessary.
Re:The Silicon Valley execs who don't eat for days by grwthckrmstr on Tuesday September 05, 2017 @12:28AM (#15172525)
Very valid point.

The purpose of restricting your diet is to restrict calories, while not being nutritionally deficit.

This is very important to keep in mind in order to prevent long term deficiency diseases.

Re:The Silicon Valley execs who don't eat for days by Lordarminius on Monday September 04, 2017 @08:44PM (#15171762)
Mine is caused by carb. withdrawal and is significant because it affects my functioning and productivity.