About Us

The Diennet Institute is the world’s most effective Weight Loss Research Center. Founded in 1975 by Dr. Marcel Diennet, MD, we specialize in a customized approach to weight loss in which every patient receives a unique treatment custom designed to meet his or her specific needs under the supervision of a licensed physician.

We believe that finding peak hormonal balance is key to weight loss success and overall emotional and physical well-being. That’s why we look closely at your personal medical history, unique hormonal make up, and lifestyle habits before formulating a physician-prescribed treatment that is customized specially for you. Overtime we reformulate your prescription as necessary, to make sure your treatment is working effectively and to help you achieve maximum results that last. ​

During the 1970s, Dr. Marcel Diennet recognized the potential medical uses of computers – and he’s been helping patients ever since. To track the effectiveness of medical treatments, Dr. Diennet has built a database containing more than 38 years of treatment data from more than 130,000 patients – including history, treatment and results. When you sign up for the Diennet custom medical weight loss treatment, historical data is used to quickly determine the best formula for you, increasing the efficacy of your treatment and guaranteeing weight loss success. ​

Since 1975, Dr. Diennet has helped more than 130,000 men and women – including royalty, political leaders and celebrities – lose weight and feel more confident. He treats each and every case with the same care and expertise, and is determined to help you improve your body and your life with a custom weight loss treatment that works. ​

The Diennet Treatment is a complex mixture of pharmotherapy, opotherapy, phytotherapy, and homeopathy.
Pharmotherapy is also known as Conventional Medicine. It is the use of pharmaceutical medicine to give our bodies the kick they need. The drugs interact with receptors or enzymes in cells to achieve a desired result. These are also used in subclinical/Homeopathic doses. Homeopathy, as we definite it, is the employment of medicine being delivered in sub-clinical (very small) doses. In this manner, we are able to avoid reactions and side-effects, achieving the maximum amount of results with the minimum amount of issues to the patient.
Opotherapy (also known as similia similibus by Ancient Romans and Greeks) is defined as the treatment of illness and disease with extracts made from certain glands of animals, such as the thyroid or adrenal glands.
Phytotherapy is the treatment of illness and disease with extracts made from plants and herbs. ​

For years Dr. Diennet has scoured the world in search of the best treatment methods on Earth. He has been cherry-picking the most effective treatments from a range of different cultures such as Jesuit Priests, European Herbalism, and Germanic Homeopathy. The Jesuits of the Black Forest (with whom Dr. Diennet studied as a young boy,) have used naturally occurring ingredients since the Dark Ages to treat patients quite successfully. Dr. Diennet incorporated what he learned in his younger years into The Diennet Treatment.

During Dr. Diennet’s work treating starvation victims in Africa as well as providing aid to victims of the Nigerian-Biafran Civil War, he came upon herbs employed by Tribal Witch Doctors. He saw the effectiveness of some of the herbs and incorporated these herbs into the Diennet Treatment as well.

During his time in the Vietnam War (In which Dr. Diennet opened an orphanage for Polio victims that continues to be the largest hospital in the Phu My region of Vietnam,) he learned and incorporated many Chinese methods of treatment and diagnosis such as Homeopathy and Osteopathy (a treatment and diagnosis method that emphasizes the relationship between structure and function in the body, and the ways it can be affected through manipulative therapy and medicine.)

Opo- and Phytotherapy is derived from the practices of Ancient Mediterranean Doctors and healers. Though they didn’t get everything right, the Similia Similibus principal is extremely effective in the realm of hormones. ​

By using not one method or school of thought, but, mixing together several that Dr. Diennet has encountered and studied in his more than 4 decades-long career as a Medical Doctor, Dr. Diennet is able to provide you with the perfect complex custom formula suited just for your needs and wishes.