நான் யார்?: Are humans natural meat eaters?

Arguments for eating meat

Humans have eaten meat throughout history, evolution & culture.
Some humans societies have subsisted solely on meat.
Humans have 4 canine teeth among 32. These are used for tearing meat. Hence, humans are omnivores.
Vegans suffer from Vitamin B12 deficiency which is available in meat.
Meat eating helped develop the larger brain of humans.
Meat provides the protein that humans need.

In human history, most of the diet consisted of plants through gathering. Hunting was difficult. Meat was rare. A lot of people would share meat & would get only a little.
In societies where farming was difficult, such as Eskimos on icy lands, yes, they subsisted solely on meat. However, they have a lower average life span & suffer from meat eating ailments like arteriosclerosis & internal parasites.

Per Harvard university researchers, humans lack the gut flora to digest meat. In a study group eating only meat, their gut had an explosion of Bilophila, while the plant eating group was fine. Meat inflames our intestines & intestinal walls.
Meat eating increases risk of atherosclerosis, colon cancer, heart disease, high cholesterol levels, higher BMI, obesity, lower life spans & lower overall health.

Yes, humans have canine teeth. But so do herbivores such as gorillas & hippos. It is postulated that the canines were originally for displays of aggression within the species but are now vestigial.
Are humans omnivores?

Carnivores don't chew; they gulp down meat. Carnivores have highly acidic stomachs. Meat has high levels of bacteria & spoils quickly. The highly acidic stomachs destroy the bacteria in even the rotting meat. Their gut is relatively linear & short.
Herbivores have primarily incisors & molars. They can chew sideways. Their saliva has an enzyme called amylase that helps in pre-digestion. They chew their food before swallowing. Their stomachs are less acidic. Plants typically have less bacteria. Their gut is long & winded where the fibrous plant matter passes through slowly.
True omnivores like bears have characteristics similar to carnivores.
Humans exhibit the characteristics of herbivores & not omnivores.

Vitamin B12 comes from bacteria in the soil. In the pre-pesticide past, humans would typically not clean their produce thoroughly & end up consuming some B12 from the soil. Herbivores consume the B12 from the unclean produce that ends up in their flesh.
The brain needs a large amount of energy. Consuming carbohydrates helped humans develop the large brain, not the protein & fat.
Plants provide all the protein that a human needs, without needing to go to meat. There are elite vegan athletes who get their protein needs fulfilled completely from plants.

Are humans natural herbivores? - Hinduism Today (Jan/Feb/Mar 2019)-Pg 34-Mayuresh Visswanathan

Diet for a new America - John Robbins

The Omnivore's Dilemma - Micheal Pollan

Forks over Knives - documentary

Food Inc - documentary

Cowspiracy - documentary

Fat, sick & nearly dead - documentary