I have a friend that is quite overweight. He is very much a carboholic. I started Keto about 3 months ago and have lost over 15lbs. My husband is not strictly Keto, but is trying and has lost about 40 lbs (cutting most sugar and carbs). The friend has asked about the diet and I’ve explained the basics, along with the initial Keto flu symptoms. He makes a lot of excuses as to why he can’t do the diet (wife won’t cook that way, daughter can’t give up sugar, etc). He eats at our house occasionally and the past 2 times that he has had a Keto meal (pulled pork with creamed spinach, bacon and eggs) he has gotten a severe headache afterwards. His thought is that the lack of carbs in a single meal would have this horrible affect on him and he has the “Keto Flu”. He states that he NEVER eats a meal without carbs, so to drop them for even one meal causes these symptoms. He also states that when he gets the headache, he has a piece of bread and the headache goes away.
Can you be affected by simply missing carbs in a single meal this way? Or is he making this up to have another excuse not to diet?