What Wikipedia says about Reactive Hypoglycemia

Treatment

To relieve reactive hypoglycemia,some health professionals recommend taking the following steps:

• Eat small meals and snacks about every 3 hours.
• Exercise regularly.
• Eat a variety of foods,including meat,poultry,fish,or non-meat sources of protein,foods such as whole-grain bread, fruits,vegetables,and dairy products.
• Choose high-fiber foods and food with a moderate-to-low glycemic index.
• Avoid or limit foods high in sugar,especially on an empty stomach.
• Avoid alcohol,caffeine,and highly starchy foods such as white rice,potatoes,corn,and popcorn (all very high on the glycemic index).
• Adding soluble fibers (e.g., 5 to 10 grams of hemicellulose, pectin, or guar gum) to a meal may help to relieve symptoms,especially in dumping syndrome. [3]
• Limiting total intake of carbohydrate to 130 grams/day can reduce the severity of symptoms.

Your doctor can refer you to a registered dietitian for personalized meal planning advice Although some health professionals recommend a diet high in protein and low in carbohydrates,studies have not proven the effectiveness of this kind of diet for reactive hypoglycemia.If the diet does not provide a relief in symptoms,there are some medications which can be useful in reactive hypoglycemia,and that should be administrated only by a physician.

Worried Parent,

Did your Son have a GTT,Glucose Tolerance Test to confirm a Diagnoses of Reactive Hypoglycemia?If he has been diagnosed I'd say not eating regularly would make him feel unwell..he is more than likely experiencing Hypoglycemia.I really don't have mood swings,however feel Depressed,sad or down,but I have a lot of Stressy crap going on in my personal life ATM (at the moment)..how old is your Son?Have you or your Son sought a second opinion for the Cyclothymia?

It is sad to say,but your Son is an Adult and will eat however he chooses.There is nothing you or his Doctor can do to change the decisions he makes for himself.All you can is hope that he wakes up and realizes what he is doing to his Body.I was 22 when Diagnosed with Reactive Hypoglycemia.I'm now 35 and only in the past couple of Years have woken to realize I want to be Healthy and to have longevity,so am making necessary steps for Optimum Health.I am not a Parent,so I can't imagine how worried you are about your Son.I wish he would understand the importance of eating a Healthy Diet with added Exercise.

I wish both you and your Son the best..