- Beriberi used to be so prevalent all over East Asia that up to 40 percent of the Imperial Japanese Navy by the late 19th century was affected by it.
- Japanese naval physician Takaki Kanehiro became one of the first people in the world to discover that beriberi was linked to diet, specifically the Navy's reliance on rice.
- Takaki proposed a change in diet to include more protein-rich foods, and this change successfully eliminated the disease within the Navy in just two years.
- Takaki's work not only improved the health of Japanese sailors but also improved its military strength and advanced global understanding of nutritional diseases and epidemiology.
Beriberi, or thiamine deficiency, used to be a disease that was endemic to many parts of the world, including Japan – until a Japanese naval physician discovered that the simple solution was a change in diet and an increase in the natural intake of vitamins.
This is according to research from the 1962 book "The Vitamin Hunters" by Albert von Haller, which chronicles how many endemic diseases like beriberi, scurvy, pellagra and rickets were nearly wiped from existence following the knowledge that they were caused by vitamin deficiencies.
The man responsible for helping solve the global problem of thiamine deficiency is Takaki Kanehiro, a Japanese naval medical officer who discovered the cure to beriberi around 10 years before Dutch physician Christiaan Eijkman won the Nobel Prize in Medicine for his work in identifying that beriberi was caused by a nutritional deficiency, namely the lack of thiamine or vitamin B1. (Related: B vitamins are CRUCIAL to heart health, brain health and eye health.)
Beriberi, characterized by symptoms such as paralysis, heart weakness and swelling of the liver, was widespread in Japan and all over East Asia during the 19th century. In the Imperial Japanese Navy, the disease reached epidemic proportions, with up to 40 percent of sailors affected. The illness severely compromised the Navy’s operational capacity, as many recovered sailors were left unfit for service.
Takaki, who joined the Navy as a medical officer in 1872, observed the devastating impact of beriberi firsthand. At the time, the disease was widely believed to be caused by an infectious agent, a theory influenced by the recent discoveries of Louis Pasteur and Robert Koch. Takaki initially sought to identify the presumed bacillus but found no evidence to support this hypothesis.
A change in diet was all it took to rid the Imperial Japanese Navy of its beriberi epidemic
Takaki's breakthrough came when he hypothesized that beriberi was linked to the sailors’ diet, particularly their reliance on polished rice. He noted that officers, who consumed a more varied diet were less affected than regular rank-and-file sailors who primarily consumed rice. Takaki proposed that the disease was caused by a deficiency of nitrogenous elements like protein in the diet – a theory that contradicted prevailing medical beliefs.
To test his hypothesis, Takaki conducted a controlled experiment in 1884 using two naval vessels. One ship maintained the traditional rice-based diet, while the other was provisioned with a protein-rich diet similar to that of British sailors. The results were striking: On the control ship, over two-thirds of the crew developed beriberi, while on the other ship, only four cases were reported and all among sailors who had secretly consumed more rice than proteins.
Takaki's findings led to a radical overhaul of the Imperial Japanese Navy’s dietary provisions. By 1885, the new diet had been adopted across the fleet, and after just two years the Navy had effectively eradicated the disease from its ranks.
This achievement not only improved the health and morale of sailors but also strengthened Japan’s military capabilities, contributing to its victory in the Russo-Japanese War in 1904.
Takaki's work extended beyond his research on beriberi. He founded the Sei-I-Kwai Medical Training School in 1881 and pioneered an emphasis on patient-centered care in Japan. He also established the country's first nursing school and created a charitable hospital to serve the poor, which still stands today as the Jikei University School of Medicine in Minato, Tokyo.
In recognition of his contributions, Takaki was appointed Navy Surgeon General in 1885 and became the first person in Japan to receive a Doctor of Medical Science degree in 1888. He was elevated to the imperial peerage in 1905 and awarded Japan’s highest honors, including the Grand Cordon of the Order of the Sacred Treasure and the Order of the Rising Sun.
Kanehiro Takaki's pioneering work on beriberi marked a turning point in the understanding of nutritional diseases. By demonstrating the link between diet and health, he not only solved a critical problem for the Japanese Navy but also advanced the field of epidemiology. His legacy continues to influence medical education and healthcare in Japan, underscoring the importance of empirical research and patient-centered care.
Watch this sermon from Mike Adams, the Health Ranger, of the Church of Natural Abundance, as he talks about several God-given vitamins and molecules that prevent disease.
This video is from the Health Ranger Report channel on Brighteon.com.
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