Benefits of a Vagan Diet
Compared withnon-vegetarians, Western insectivores have a lower mean BMI( by about 1 kg/ m2), a lower mean tube total cholesterol attention( by about 0 · 5 mmol/ l), and a lower mortality from IHD( by about 25). They may also have a lower threat for some other conditions similar as constipation, diverticular complaint, gallstones and appendicitis. No differences in mortality from common cancers have been established. There's no substantiation of adverse goods on mortality.
Vegetarians: Vegan: Mortality:
Vegetarian diets are based on cereals, pulses, nuts,
vegetables and fruits, and may also include dairy products
and eggs. Lacto-ovo-vegetarians do not consume any meat,
poultry or fish, but do include dairy products and eggs in
their diet; vegans do not consume any foods of animal
origin. Unless otherwise specified, reference to vegetarians
means lacto-ovo-vegetarians, because relatively little
information is available for vegans. In general, a vegetarian
diet is lower in saturated fat and higher in starch, NSP, fruits
and vegetables than a non-vegetarian diet.
Plasma cholesterol concentration
Studies have consistently reported that vegetarians have
lower mean plasma total cholesterol concentrations than
comparable non-vegetarians (Dwyer, 1988, 1991; Sanders
& Reddy, 1994; Thorogood, 1995). In an analysis of data
from 3000 men and women, Thorogood et al. (1987)
reported that mean total cholesterol concentrations
(mmol/l), adjusted for age and sex, were 4·29 in vegans,
4·88 in vegetarians, 5·01 in fish eaters and 5·31 in meat
eaters (Table 1). Mean concentrations of HDL-cholesterol
were higher in the fish eaters, but otherwise did not differ
between the groups.
Mortality
The relatively low plasma cholesterol concentrations of
vegetarians would be expected to reduce the risk of IHD.
Thorogood et al. (1987), for example, estimated that the
0·4 mmol/l lower plasma cholesterol concentration of
vegetarians compared with meat eaters which they observed
might lead to a 24 % reduction in the incidence of IHD. It is
also possible that vegetarian diets might protect against
cancers of the colo-rectum, breast and prostate, since these
cancers are common in rich countries but rare in poor
countries with predominantly plant-based diets.
Morbidity
Relatively little information is available concerning morbidity in vegetarians. There is some evidence that vegetarians may have a lower incidence of constipation (Burkitt et al.1972), diabetes (Snowdon & Phillips, 1975), diverticular disease of the colon (Gear et al. 1979), gallstones (Pixleyet al. 1985), hypertension (Beilin, 1993) and emergency appendicectomy (Appleby et al. 1995).
Conclusion
Compared with non-vegetarians, Western vegetarians have
a lower BMI (by about 1 kg/m2), a lower plasma cholesterol
concentration (by about 0·5 mmol/l), and a lower mortality
from IHD (by about 25 %). They may also have a lower risk
for some other diseases such as diverticular disease,
gallstones and appendicitis. No differences in mortality
from common cancers have been established. There is no
evidence of adverse effects on mortality. Much more
information is needed, particularly on other causes of death,
osteoporosis, and long-term health in vegans. The evidence
available suggests that widespread adoption of a vegetarian
diet could prevent approximately 40 000 deaths from IHD in
Britain each year.
References
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