A new study has given people another good reason to lose all that extra weight by finding that fat in the stomach may cause vitamin C to promote the formation of certain cancer causing chemicals rather than preventing it.
As a part of their study the researchers set out to find the impact of fat and lipid) and vitamin C (ascorbic acid) on nitrite chemistry in the upper (proximal) stomach.
The upper stomach is especially vulnerable to pre-cancerous changes and tumour growth.
Nitrosamines are cancer causing compounds formed in acidic conditions, such as those afforded by stomach acid.
In most circumstances, vitamin C inhibits the formation of nitrosamines by converting nitrite to nitric oxide, reports the BMJ.
However, the study showed that adding ten percent fat had vitamin C boosting the production of nitrosamines between 8 and 140-fold.
The findings may be relevant to the recent observations that vitamin C supplements fail to reduce cancer risk.
The study is published ahead of print in the journal Gut.