In the United States, although uncommon, it usually occur in alcoholics, malnourished young adults, and infants who are on a low proteins diet or are being breast-fed by thiamine efficient mothers.
Sign and symptoms of infantile beriberi include cyanosis, dyspnea, tachycardia, aphonia (soundless crying), and eventual cardiac failure.
Although whole grains may be rich in thiamine, processing of grains significantly reduces their thiamine content. Likewise, because thiamin is water soluble and heat sensitive, cooking largely results in the loss or destruction of this vitamin especially when chlorinate waster is used.
Thiamine deficiency and their symptoms