Thiamine Alarms: 19 Subtle Signs Your Body Needs Vitamin B1

15. Rapid Heart Rate (Tachycardia)

Thiamine plays a vital role in cardiovascular health, particularly in maintaining proper heart function. A deficiency can lead to an increased heart rate, or tachycardia, as the heart works harder to compensate for the reduced energy supply in the body. This occurs because thiamine is essential for producing adenosine triphosphate (ATP), the energy molecule that fuels the heart muscle. Without it, the heart may struggle to pump efficiently, leading to palpitations, a pounding sensation in the chest, or shortness of breath during routine activities. In some cases, prolonged thiamine deficiency can contribute to heart failure, known as "wet beriberi," a condition where fluid builds up in the heart and lungs due to inefficient circulation. If someone experiences a persistently rapid heart rate along with other symptoms of thiamine deficiency, it is important to seek medical attention promptly.

16. Increased Sensitivity to Noise

An unusual but notable symptom of thiamine deficiency is hypersensitivity to sound. Some individuals report feeling overwhelmed by normal volumes of noise, experiencing discomfort or even pain when exposed to loud environments. This heightened sensitivity is likely due to thiamine’s role in nervous system function, as the vitamin helps regulate nerve signals and sensory processing in the brain. When thiamine levels are low, neurons may become overactive or misfire, leading to an exaggerated response to auditory stimuli. This can make social gatherings, traffic noise, or even simple household sounds distressing. If someone develops an unexpected intolerance to noise alongside other neurological symptoms, a thiamine deficiency could be a contributing factor.