Posted by tecknohed on October 15, 2005, at 19:51:54
In reply to Fatigue after eating?, posted by Regis Harold on October 15, 2005, at 15:46:45
Hi.
Post-mealtime tiredness can be caused by a high carbohydrate diet and/or not enough protein. If you're sensitive to the effects of serotonin (SE) then you might benefit from increasing your protein intake at breakfast and lunch. A protein/carb ratio of 1:1 is ideal. Evening meal is less relevant.
Carbohydrates increase insulin release which not only controls blood sugar but has an effect on amino acid ratio too. It basically lowers the blood levels of certain aminos (including precursors to NA (noradrenalin) and DA (dopamine)) that share the 'transport vehicle' with SE through the blood-brain barrier. This means more SE can get through which can cause tiredness in susceptible people.
Increasing protein will help prevent this happening. It will help steady the sensitivity by allowing a more steady serotonin turn-over and a better balance with NA and DA.Its worth pointing out that carb 'highs' are more to do with blood sugar than it is amino ratio, hence the 'slump' experienced afterwards from the excess insulin and low blood sugar.
I'm not saying this is definitely the cause, but its something you can easily try yourself for a week or so.
I too hate feeling tired during the day and I wish you luck in finding a solution.
Regards,
Teck.
poster:tecknohed
thread:567218
URL: http://www.dr-bob.org/babble/20051010/msgs/567334.html