[PHNUTR-L] High fat-low carb diet reduces heart's energy stores
Kathrynne Holden, MS, RD
fivestar at nutritionucanlivewith.com
Tue Nov 15 12:51:58 PST 2005
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High fat-low carb diet reduces heart's energy stores
15/11/2005- High fat-low carb diets, such as the once-trendy Atkins
diet, appear to negatively impact the heart’s energy stores, shows new
research presented in the US this week.
While many nutritionists have attacked the Atkin’s weight loss regime
for its high fat content, putting dieters at risk of clogged arteries
and heart attack in the long-term, the small study carried out at the
University of Oxford is one of the first to demonstrate a direct effect
on the heart after following the diet for a short period.
The results, presented at the American Heart Association conference in
Dallas on Sunday, found that after restricting carbohydrate intake to
just 20g per day, and instead consuming much more fat and protein, the
energy stores in the hearts of 19 participants were reduced by an
average of 16 per cent.
Such a reduction does not have direct implications for health, however
one of the participants did notice a difference when running, said lead
author Professor Kieran Clarke: "He couldn’t manage his daily run while
on the diet."
"The heart requires energy for contractions," explained another of the
authors, Dr Damien Tyler, "although here we were measuring energy stores
rather than energy used."
He added: "You do see similar patterns in a more severe form in patients
with heart failure, and type 2 diabetics also suffer from lower energy
stores. But the implication of these findings on health in the long-term
are difficult to define."
Yet the new work clearly demonstrates that the heart is directly
affected by the Atkin's diet and could therefore be susceptible to other
"There's some prior evidence that increasing levels of circulating fatty
acids in the bloodstream can affect the heart," Dr Tyler told
"This study gives us the basis for further investigating the effects of
Kathrynne Holden, MS, RD < fivestar at nutritionucanlivewith.com >
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