All about fruitarianism with a long-term fruitarian, Lena

The interplay between the fruit-eating primates and the tropical fruit trees is an example of coevolution, where species adapt to each others’ needs over millions of years. The plants have an interest in their fruit being eaten when the seeds are ready to be dispersed, and for the animals the value of a fruit is greater when it contains more sugar and nutrients. An unripe banana for instance contains mostly starch.

Prof. Matthias Laska

”This adaptation goes back some fifty thousand years, when the first primates appeared. Initially they ate mostly insects, before eventually trying fruit and vegetables. Some fruit didn’t want to be eaten, so they developed toxic substances. Others acquired better and better odours that signaled energy-rich sugar and nutrients.” 

Benjamin Franklin

My refusing to eat flesh occasioned an inconveniency, and I was frequently chided for my singularity, but, with this lighter repast, I made the greater progress, for greater clearness of head and quicker comprehension. Flesh eating is unprovoked murder.

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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