[1] His father, Miloslav Rechcigl, Sr., was a prominent politician in the pre-World War II Czechoslovakia, having been elected as the youngest member to the Czechoslovak Parliament and who held the position of President of the Millers Association of Bohemia and Moravia.

[7] In 1970 he joined the US Agency for International Development, which was originally a part of the US Department of State, as nutrition advisor and later was put in charge of research program.

One of the most striking effects of tumor on the host was the depression of enzyme catalase in the livers and in the kidneys which some investigators thought was due to a hypothetical substance, referred to as toxohormone.

Using specific metabolic inhibitors, he evaluated relative rates of synthesis and degradation of the enzyme catalase under a variety of physiological, pathological and pharmacological conditions.

The analyses of the first, the second the backcross generations between high-enzyme and low-enzyme mouse substrains showed that the difference was due to a single autosomal gene pair with low dominant to high.

This was a unique finding since in all normal rats and mice studied previously the rates of enzyme destruction seemed to be almost constant.

He is the author or editor of over thirty monographs and handbooks [13] in the field of biochemistry, physiology, nutrition, food science and food technology, agriculture, and international development, in addition to a large number of scientific articles and book chapters, including: Apart from his purely scientific endeavors as a researcher and science administrator, Dr. Rechcigl devoted almost 50 years of his life to the Czechoslovak Society of Arts and Sciences (SVU), an international organization, with headquarters in Washington, D. C.[14][15][16][17][18][19][20][21] He was responsible for the first two Society's World Congresses, both of which were a great success and which put the Society on the world map.

[36] Based on this survey, he has prepared a detailed listing, Czech-American Historic Sites, Monuments, and Memorials which was published through the courtesy of Palacký University of Olomouc (2004).

[41] A selection of his biographical portraits of prominent Czech Americans from the 17th century to date has been published in Prague, under the title Postavy nasí Ameriky (Personalities of our America).

[42] On the occasion of his 75th birthday, the Society published a collection of his essays, under the title Czechs and Slovaks in America[permanent dead link‍], as a part of the East European Monographs series, distributed by the Columbia University Press.

Jack Rechcigl is a professor of soil and water sciences at University of Florida and Director of Gulf Coast Research and Education Center in Wimauma.