Got any sources for your claims?
Frances Allen

Yes. Look up Ivor Cummins on YouTube for lectures. If you can take a course or get your hands on Biochemistry for the Medical Sciences by Newsholme and Leech. Its all about the metabolics. Our metabolics are about energy, and how we process and distribute it. The calorie is the Master. But its Governor is Insulin and other hormonal ministers. Our food choices determine the dance and music among these factors.

There is nothing like the N=1 experience. And as someone who has reversed his heart disease and put his Type 2 Diabetes into remission through Keto LCHF, eating meat btw, the evidence supporting that choice is clear for me. Once going on this dietary path ( I tried Vegetarian and metabolically speaking I failed and had a heart attack) I normalized my A1C in less than 90 days, eventually went off 5 Rx Drugs for T2D and CHD (at a savings to date of over $18K in Rx drug costs), and returned to and sustaining college age weight and clothing size. Now results like this question the dogma that people like Dr. Kahn are invested in.

Absolutely it is ethical to recover one’s health and live fully and be a contributor to society. In order for us to live, life must be sacrificed — whether plant or animal. Some Vegan ideologues seem to forget that in their morally superior delusion. We just need to change how we treat and raise our food. That is actually the problem. Trying to force humanity to be something it is not, ie. Vegan, is delusional. This is my ethos:

“On Eating and Drinking
Kahlil Gibran

Would that you could live on the fragrance of the earth, and like an air plant be sustained by the light.

But since you must kill to eat, and rob the newly born of its mother’s milk to quench your thirst, let it then be an act of worship.
And let your board stand an altar on which the pure and the innocent of forest and plain are sacrificed for that which is purer and still more innocent in man.

When you kill a beast say to him in your heart,
“By the same power that slays you, I too am slain; and I too shall be consumed.
For the law that delivered you into my hand shall deliver me into a mightier hand.
Your blood and my blood is naught but the sap that feeds the tree of heaven.”

And when you crush an apple with your teeth, say to it in your heart,
“Your seeds shall live in my body,
And the buds of your tomorrow shall blossom in my heart, 
And your fragrance shall be my breath,
And together we shall rejoice through all the seasons.”

And in the autumn, when you gather the grapes of your vineyards for the winepress, say in your heart,
“I too am a vineyard, and my fruit shall be gathered for the winepress,
And like new wine I shall be kept in eternal vessels.”
And in winter, when you draw the wine, let there be in your heart a song for each cup;
And let there be in the song a remembrance for the autumn days, and for the vineyard, and for the winepress.”

PS. Had I not experienced so much metabolic derangement from the processed food and SAD that gave me my T2 Diabetes and CHD, I would still be able to enjoy the apple, which is now only a fruit for a special occasion.