Tim Noakes

Timothy David Noakes (born 1949) is a South African scientist, and an emeritus professor in the Division of Exercise Science and Sports Medicine at the University of Cape Town.

He has run more than 70 marathons and ultramarathons, and is the author of several books on exercise and diet.

He is known for his work in sports science and for his support of a low-carbohydrate, high-fat (LCHF, Banting) diet, as set out in his books The Real Meal Revolution and Lore of Nutrition: Challenging Conventional Dietary Beliefs.

Noakes was born in Salisbury, Southern Rhodesia (today Harare, Zimbabwe) in 1949 as the son of a third-generation tobacco exporter and moved to South Africa at the age of five.

As a young boy his main sporting interest was cricket.

Noakes attended boarding school at Monterey Preparatory School in Constantia, Cape Town.

One year was spent as a foreign exchange student at Huntington Park High School in Huntington Park, California.

Prep school was followed by Diocesan College, from which he matriculated in 1966.

He has earned an MBChB (1974), MD (1981), and DSc (Med) (2002).

In 1980 Noakes was tasked to start a sports science course at the University of Cape Town.

Noakes went on to head the Medical Research Council-funded Bioenergetics of Exercise Research Unit, which was later changed to the MRC/UCT Research Unit for Exercise Science and Sports Medicine.

He first recognised this condition in a female runner during the 1984 Comrades Marathon, and published his findings in 1985 in the journal Medicine and Science in Sports and Exercise.

In the early 1990s Noakes co-founded the Sports Science Institute of South Africa, with former South African rugby player Morne du Plessis.

He is a leading researcher on the condition now known as exercise-associated hyponatremia (EAH).

Noakes served on the selection panel for the International Olympic Committee’s Science Prize between 1995 and 2002.

Noakes is a fellow of the American College of Sports Medicine.

In 1996 Noakes published his theory of the "central governor".

The theory proposed that fatigue is a "protective emotion" rather than a physiological state.

Noakes wrote the consensus statement for the 1st International Exercise-Associated Hyponatremia Consensus Development Conference in Cape Town in May 2005.

In 2005 he undertook a series of experiments in the Arctic and Antarctic on South African (British-born) swimmer Lewis Gordon Pugh to understand human capability in extreme cold.

He discovered that Pugh had the ability to raise his core body temperature before entering the water in anticipation of the cold and coined the phrase 'anticipatory thermo-genesis' to describe it.

In 2007, Noakes was the expedition doctor for Pugh's one kilometre swim at the Geographic North Pole.

Noakes has characterised mainstream dietary advice, which emphasizes carbohydrate consumption, as "genocide", and instead advocates a low-carbohydrate, high-fat (LCHF) diet — a variation of the low-carbohydrate diet — often referred to in South Africa as the "Noakes Diet" (or, less commonly, the "Banting" diet).

Noakes founded the Noakes Foundation in 2012 to help promote the diet, which is described in detail in Noakes's 2014 book The Real Meal Revolution.

Noakes' father died from diabetes.

Noakes believes his father's diet was instrumental in his decline, so following his own diagnosis with diabetes, Noakes changed his diet to a LCHF diet.

He also reversed the carbohydrate-loading advice he had given previously to athletes, and which had featured extensively in his book Lore of Running.

He has cited the effects of diabetes on his father and his father's life regrets as important motivation for his efforts to promulgate his dietary advice.

Despite following his diet, Noakes's fasting glucose levels barely budged, and he started taking the diabetes management drug metformin and dietary supplements to control the condition.

He now describes himself as "cured" as long as he follows this regimen.

Registered dietician Megan Pentz-Kluyts said that omitting food groups, as Noakes's diet does, is the hallmark of fad diets not backed up by scientific evidence.

After members of the Parliament of South Africa expressed support for his diet, fellow faculty members at the University of Cape Town accused him of making “outrageous, unproven claims about disease prevention” in an open letter they sent to the Cape Times.

Wim de Villiers, dean of the faculty, accused Noakes of having no real scientific evidence to back up his assertions.

In February 2014 a registered dietician complained to the Health Professions Council of South Africa (HPCSA) that Noakes tweeted to a mother that she should wean her baby onto low-carbohydrate, high-fat foods, which he described as real foods.

The HPCSA held a hearing about the allegation against Noakes over the next few years.

Controversially, on 28 October 2016, the HPSCA incorrectly released a statement announcing that Noakes had been found guilty of misconduct, namely "giving unconventional advice over social media".

In a second press release issued over three hours later, the HPSCA apologised for the mistake.

Noakes was cleared of misconduct in April 2017.

The HPSCA lost its appeal in June 2018 and the appeal committee dismissed the HPSCA's case by unanimous decision.

Noakes commented: "Acquitted on all counts, twice, by two different judging panels".