Hello - thanks for asking your question.
What you are describing may be known as postprandial hypotension. This refers to a post-meal drop in blood pressure after rising. Surgeon is correct in his comments below - due to the meal-inducing pooling of blood, this leads to inadequate cardiac output and thus a drop in blood pressure. The exact mechanism is not well understood. Another contributing factor is the effect of insulin causing a dilation of the blood vessels.
Caffeine has been traditionally recommended as a treatment, but there are no studies suggesting that it consistently works. A medication called octreotide has also been studied, but this is a medication given via IV and is in investigational stages. I would discuss treatment with your personal physician.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Thanks,
Kevin, M.D.
I have the same condition.I was a sportsmen and had no problems.After some dhiarea I started this thing.As soon as I eat anything I get dizzy and drunk like and it last about 2 hours.More solid food it is worse it gets.I avoided meals not to experience this problem.I experience toxic like reaction after the meal allmost like that I would be poisoned.Ear pains and often sore throat and arthiritis like symptoms lasting about 1 hour.Tests thyroid I developed because of this nodul on thyroid 2cm.I developed also fall of the sugar 2,7 after first hour of glucose drink.However I had never had this before.I was checked for pilori bacter I had it.Present level of infestation of pilori bag is as follows.Europe 75% of population.USA 50% of population,Canada 35% of population.This bug you can pick anywhwere suspect is milk but restaurants etc are other sources.There is 20 varieties of this bug.Some can cause ulcers some can cause cancer in the stomach and digestive troubles galore.Bug produces cytotoxin which which affects are deadly for human body.Go and have yourself checked for this bug.Blood test serum.Helicobacter Pillori.Discovered in Australia about 10 years ago.Stay away any sugars they for some reasom make it much worse.Alcohol too.Light headeness can be also caused by constipation and constipation can be caused by inflamation (inflammation) of stomach and intestines.Take fish oil Glucosamine chondroitin lactobacilus and go on rice,potatoes and simple foods small portions.Drink a lot of tea herbal.In the morning take juice from raw potatoes an the empty stomach.Stay away from eggs and MILK for sure.If all this fails.Drink in juice mixer following wild blueberies some banana rice coocked/brown/ and some soya drink couple of times a day you will stabilize.I am sure today it is caused by a bug but our medical proffessionals are busy making money and the time for the individual is so small that to find it for them is not worse it.