Reasons that we are designed for a Plant-based diet”   

[Viva Health]    What is our natural diet? Are humans evolutionarily adapted to eat animals, plants or both?


                                               [ Points taken from article ]

Most of humans teeth are molars which are designed for crushing and grinding plant-based foods , not tearing .

We [ humans] have saliva that is alkaline that contains amylase which breaks down carbohydrates unlike carnivores animals that have acidic saliva .

Humans intestines are like 4ft longer than our bodies which is good for plant-based because it takes longer to digest which helps to get all the nutrients from a plant-based diet .

Animals [ carnivores ]  have shorter intestines which makes sense.  This allows for quicker digestion which keeps meats from rotting .

Humans jaws go side to side as well as up and down which shows we are designed for grinding and crushing things unlike animals , who ‘s jaws only go up and down which lends to greater ripping and tearing power [ meats] .

We have hands made for gathering things like plants , fruits , not ripping apart flesh . Also , we like most other plant-eating primates cool ourselves by sweating , not panting like most carnivores .

We cannot make our own vitamin C animals do

We drink by sipping not lapping like animals


From top to bottom, human digestive systems have evolved to efficiently process plant foods. Digestion begins in the mouth with a salivary enzyme called amylase. Its sole purpose is to help break down complex carbohydrates from plant foods into simple sugars. As there are no carbohydrates in meat, true carnivores don’t need this enzyme. Their salivary glands don’t make it.

The stomach juices of meat-eating animals are highly acidic. They have to be, so that they can break down the large quantities of muscle and bone materials they eat. Much lower concentrations of stomach acid are needed to digest starches, vegetables and fruits. Weight for weight, plant protein requires half the amount of hydrochloric acid to digest it, compared to animal protein. It is also digested in half the time. Vegans and vegetarians have fewer peptic ulcers than meat-eaters, mainly because their plant-based diets are easier to digest.

The human intestine is long and coiled, much like that of apes, cows and horses. This makes digestion slow, allowing time to break down and absorb the nutrients from plant foods. In contrast, the intestine of a carnivore, such as a cat, is short, straight and tubular. This means that flesh can be digested very rapidly, and the remnants excreted quickly, before they putrefy (rot).

The difference in transit time (time taken for food to make its way from the mouth to the anus) between humans and carnivores is what really brings the anatomical differences home. Humans – even those on a high fibre diet – have an average transit time of almost 41 hours. In stark contrast, the average transit time in a pure carnivore such as the mink, is just 2.4 hours! This means that when people eat meat, it has plenty of time to putrefy (rot) and cause the production of cancer-causing agents.

We cannot make vitamin C – we need it in our diet. Carnivores and omnivores manufacture it internally.


Comparative Anatomy Chart: Carnivores, Herbivores, Omnivores and Humans

Carnivore Herbivore Omnivore Human
Facial muscles

Reduced to allow wide mouth gape

Well developed Reduced Well developed
Jaw type

Angle not expanded

Expanded angle Angle not expanded Expanded angle
Jaw joint location

On the same plane as the molar teeth

Above the plane of the molars On the same plane as molar teeth Above the plane of the molars
Jaw motion

Shearing; minimal side-to-side motion

No shear; good side-to-side, front-to-back motion Shearing; minimal side-to-side motion No shear; good side-to-side, front-to-back motion
Mouth opening vs head size


Small Large Small
Teeth: incisors

Short and pointed

Broad, flattened and spade shaped Short and pointed Broad, flattened and spade shaped
Teeth: canines

Long, sharp and curved

Dull and short or long (for defence), or none Long, sharp and curved Short and blunted
Teeth: molars

Sharp, jagged and blade shaped

Flattened to grind food Sharp blades and/or flattened Flattened to grind food

None; swallows food whole

Extensive chewing necessary Swallows food whole and/or simple crushing


You have to admit some of the above understanding or reasoning is excellent by the author .

We definitely are designed for a plant-based diet as the “mainstay” ,  not animal meats . People in biblical times ate predominately plant-based , very little animal meats , and they lived a lot longer and healthier than we do now in these modern times .

Check these verse’s out showing we should “basically” be living of the land  Job 28 : 5  , Ps 104 : 14 [Niv] bible .

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