Lou parents who were Eastern European moved to Canada in the early 1900s.

Lou was born on May 1 1920, in Montreal, Quebec. Lou was a Jewish Person.

Lou's family who was poor and suffered a lot from the depression. As a result they barely paid for his education.

At McGill University, Lou received honors in chemistry and also while he was finishing his bachelor's degree.

Louis had a passion for chemistry, biology, and mathematics. As a result, he had a career in Human Genetics.

Amongst many Canadian researchers, he was one of the first Canadian's to investigate in Human Genetics. 

He researched about the Muscular Dystrophy which is a condition that slowly makes your muscles weakened over a period of time.

Also researched about cystic fibrosis which is a disorder that affects exocrine glands, which causes blockage in the intestines and pancreatic ducts.

At McGill University in 1944, Lou had just got his PhD in Chemistry.

Louis studied chemistry throughout his years in University. Lou felt a need that he should be more of a specialist in this field.

Lou thought over his profession, and decided to go into biochemistry.

In Ottawa, Lou started to work at the atomic energy project. Essentially, he develops new designs for carrier free radioactive isotopes.

In 1948, Lou won the Nobel Prize for Medicine. 

After that, he started to study the molecular level viruses and cells. As a result, it helped him acquire more knowledge in genetics.

In 1953, he was awarded the National Research Council Fellowship.

In 1956, a cancer research group asked him to join and work at the Division of Biology in Ontario.

He studied animal viruses, immunology, development of blood cells for 10 years at the Division of Biology.

At Ontario Cancer Institute, in the department of Medical Genetics. Lou became the first and founding chairman of this department.

At the Sick Children's Hospital, Siminovitch became Geneticist-In-Chief in 1970.

In the rest of his career, Louis concentrated on somatic cells in genetics. Where he did a vast amount of research about this topic.

To the end of 1978, the human genetics leading scientist was Louis, as he was very known at this time. 

Lou was assigned to become the research director at the New Mount Sinai Hospital Institute, after he retired from Sick Children's Hospital.

At Mount Sinai Hospital Institute, Louis studied in-depth fieldwork on the development of human genetics.

Throughout his career, Louis has won several awards in recognition for what he has completed.

Some of the awards won were: Canadian Medical Hall Of Fame in 1997, in 1999 was named the foreign associate to the National Academy of the US, not many Canadians named for this position. In 2005 Medal of Honor Canadian Medical Association, in 2008 Canadian Science and Engineering Hall Of Fame.

To conclude, Lou main goal throughout his whole entire lifetime was to study and research on human genetics.