All about fruitarianism with a long-term fruitarian, Lena

Vegetarian diets do not contain meat, poultry or fish, vegan diets further exclude dairy products and eggs. Vegetarian and vegan diets can vary widely.

In general, vegetarian diets provide relatively large amounts of cereals, pulses, nuts, fruits and vegetables.

In terms of nutrients, vegetarian diets are usually

  • rich in carbohydrates, n-6 fatty acids, dietary fibre, carotenoids, folic acid, vitamin C, vitamin E and Mg,
  • relatively low in protein, saturated fat, long-chain n-3 fatty acids, retinol, vitamin B12, zinc (Zn),
  • vegans may have particularly low intakes of vitamin B12 and low intakes of Ca.

On average, vegetarians and vegans have a relatively low BMI and a low plasma cholesterol concentration, but higher plasma homocysteine concentrations than in non-vegetarians. Overall, the data suggest that the health of Western vegetarians is good and similar to that of comparable non-vegetarians.

Franz Kafka

Now I can look at you in peace; I don't eat you any more.

Carotenoids

Carotenoids are a class of more than 750 pigments synthesized by plants, algae, and photosynthetic bacteria. These richly colored molecules are the sources of the yellow, orange, and red colors of many plants. Fruit and vegetables provide most of the 40 to 50 carotenoid phytonutrients found in the human diet.

The most common carotenoids in North American diets are α-carotene, β-carotene, β-cryptoxanthin, lutein, zeaxanthin, and lycopene. 

Provitamin A carotenoids - α-carotene, β-carotene, and β-cryptoxanthin - can be converted by the body to retinol (vitamin A), but not lutein, zeaxanthin, and lycopene. 

Dietary lutein and zeaxanthin help maintain optimal visual function - they absorb damaging blue light that enters the eye.

The results of observational studies suggest that diets high in carotenoid-rich fruit and vegetables are associated with reduced risks of cardiovascular disease and some cancers. But high-dose β-carotene supplements did not

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