I think the problem with very restrictive diets is that you may damage your health (by cutting out entire food groups)whilst it can turn out (that bar the usual triggers) that not many of the foods you have junked are a trigger for you. IIRC and it is a long time since I did the HTHYH diet that Bucholz concludes in the book that any food can be a trigger, it depends on if it is a trigger for YOU. So I could eat a big plate of mushrooms and be fine, but one or two could trigger you.Your triggers may not be included at all in the diet exclusions.The list of restricted foods are what his patients and research reports are what people have felt were their triggers. Another scenario is that you could be feeling great (e.g. on holiday with no stressors) and eat lots of trigger foods but not reach the threshold to tip over into migraine. It takes an absolute age to do reintroductions on the HTHYH diet.
I find the 6C diet just so much easier as it covers the main triggers and unlike other migraine diets I’ve looked at don’t say to allow 1/2 a cup of this, a handful of that per day. It is simple and clear with no worries if I eat a slice of cake because it has a bit of egg in it and I can have a squeeze of lime juice or lemon on food, suits me.
However, many doctors don’t believe in the migraine diets. A migraine specialist I saw didn’t rate them. She reckoned you could tell a trigger within two to three hours of eating it as you’d feel crook - e.g. red wine, aged cheese. Another thought cutting down caffeine (mainly in coffee or copious cups of tea), sticking to vodka and if it is a problem for you then cutting out aged cheeses were all that were needed. They also thought that that craving chocolate and dry, salty carbs (like crisps and crackers) were a harbinger of a migraine not a trigger.
I think Dr Silver reckons that caffeine is the problem and if the meds aren’t helping and you have given up coffee and tea you might still be in taking caffeine in some other form, e.g. green tea, chocolate biscuits etc.
I often cling to the diet and go ultra clean when I’m in bad phase as it is something proactive I can do. I also think that for me aged cheese, alcohol, caffeine and MSG are big triggers especially as I’ve got older. I don’t think eggs are a problem nor chocolate (in small amounts, but a binge along with stress etc.) will tip me over my threshold later that night. I’m invariably ill after eating out (restaurants or dinner parties) but I think that is because as well as the food I have to cope with noise, lights, conversation, the stress of it all etc. it’s too much.