Stomach Acid Part IIII (tips for low acid producers)
Incomplete digestion of proteins can cause bloating, gas and/or constipation, especially after high protein meals. Whether or not these symptoms are present, functional amino acid deficiencies can develop, no matter how much protein you eat. There are specialized tests that detect specific amino acid deficiencies. Consequences include depression, anxiety, migraine headaches and insomnia. Taking a balanced crystalline amino acid supplement like this 30 minutes prior to meals while supporting digestion and working to correct stomach acid production can drastically reduce the severity of and eventually reverse such conditions.
Further reading: http://www.drminkoff.com/dr-david-minkoff-finds-atkins-dieters-may-be-protein-deficient/