Adapted from BMJ 13 September 2025
A longitudinal study of 100,000 Seventh Day Adventists in the USA and Canada indicated that they got 10-20% fewer cancers than non-vegetarians.
The largest reductions were for breast, colorectal, prostate, stomach and lymphoproliferative cancers.
There could be several reasons for this:
They have a higher intake of fruits, nuts and legumes which are rich in protective phytochemicals.
They don’t eat any meat, including red and processed meats which are linked to a higher risk of gastro-intestinal malignancy.
The vegetarians studied also had a lower rate of obesity, and were also less likely to smoke or drink alcohol.
Diabetes Diet 
But…are they happy?
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The vegetarians studied also had a lower rate of obesity, and were also less likely to smoke or drink alcohol. So, getting less cancer will make them feel better, even if they do have less fun than we carnivores!
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