Thiamine Deficiency Risk Assessment

Assess thiamine (vitamin B1) deficiency risk. High-risk groups: chronic alcoholism (most common), prolonged inadequate nutrition or starvation above 2 weeks, malabsorption syndromes (Crohn disease, celiac), bariatric surgery (especially Roux-en-Y), persistent vomiting (hyperemesis gravidarum), and refeeding syndrome. Thiamine supplementation should precede glucose/carbohydrate administration in all high-risk patients.

Weight
Height
Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How to Use

Enter the values for the scenario you are assessing. Assess thiamine (vitamin B1) deficiency risk. High-risk groups: chronic alcoholism (most common), prolonged inadequate nutrition or starvation above 2 weeks, malabsorption syndromes (Crohn disease, celiac), bariatric surgery (especially Roux-en-Y), persistent vomiting (hyperemesis gravidarum), and refeeding syndrome. Thiamine supplementation should precede glucose/carbohydrate administration in all high-risk patients. Use the thiamine deficiency risk result to inform your calculation.

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Frequently Asked Questions