Lupercal…
From personal experience the “cleaner” you eat, the better you will feel overall. In today’s world of chemicals, additives, artificial colorings, antibiotics, pesticides, herbicides and what ever else you care to add to the list of garbage that ends up in our food, logic dictates you would fair much better to eliminate as much of it from your daily consumption as you can. It is hard to say how many illnesses, diseases, and conditions stem from our food. I am guessing most.
Whether you are a meat eater or a raw vegan it would be wise to eat the lifestyle you choose the best way you can. Your overall health is very important and no one should make those decisions for you. Do the research, know where your food comes from.
My personal experience is the better I eat the better I feel. The sharper my mind is and also my perceptions. If I sway and eat less healthy food I feel weighed down and sometimes like I am living with a fog over my eyes. Personally I eat mostly vegan (not 100% of the time but dang close). I am now growing most of my own foods and also tend to buy from farmers markets when I can. At a market you can learn to know the growers and find out how they grow, and how heavy they rely or don’t rely on chemicals.
Most people do not realize how their food effects them. A challenge that I took a few years ago was to eat 100% raw vegan for 30 days. That is raw fruits and veggies only and water. A lot of veggie and fruit smoothies, tons of salads also. Those 30 days changed my life. Almost as much as the last 20 years meditating has.
The mind is what we all wish to hone, but your body is your minds vehicle. Keep the vehicle running smooth and it will greatly help you with your mind studies.
Of course this is all just my opinion and you can follow whatever path you choose.
Namaste