There are a number of studies. The China Study that I remember by name was huge, but there are more, all indicating this. Here is a link to an article about a very recent one, any further ones are not hard to find online. https://www.eatingwell.com/plant-based-diet-multimorbidity-study-11796092
FredVegrox
If you can grow any plants for food at all, grow those, it does make significant difference. Remember animals being used for food need to be fed, this whole way is using a lot more food up, with what more is needing to grown, there is only more incidental harm with this way. The whole food was I have is good. I approach the 30 vegetables a week which is really so much healthier by getting more from produce in all that I buy, generally it is otherwise just what I will drink (non-alcoholic) like green tea, coffee, and fruit juice, the pasta and the quinoa I buy, hummus, medium salsa, and jackfruit, jars of pickle chips, jars of olives, some rice milk, almond milk, cashew milk, or soy milk, and cereal (usually raisin bran for warmer days and oatmeal for cooler days), whole grain bread, and complete cookies (Lenny & Larry's). That really is almost all, there are seasonings and very occasional things like seaweed, not so often, I still get what I might for supplemental B12, and minerals anyone might need to supplement, and more so at a higher age, that would concern me.
I would hope for connection with others who are vegan here. I see many are seeing my posts labeled to vegan who are not themselves vegan. So I give information through posts that relate to being vegan and that it is of importance.
Why consider that? I am busy but manage to come here about this one time in the week. I really want others to see they should be thinking to be vegan. If they need answers, I will be back by the next week to respond to them. Some do just need that help. Yes I do gather information for sharing.
I eat great burritos and sandwiches, and cooked meals with cut up vegetables along with whole grain pasta or else cut up potato I have, adding a few nuts and seeds, with a really great sauce I like with using hummus and some medium salsa, I use La Victoria, and seasonings I like to add. Everything I've been having for over nine years, after several years being vegan already, is with whole foods from plants and not adding things otherwise like processed stuff. This is very healthy and really helps against some serious health problems common for others.
It's the demand for animal products that continues the use of animals with their slaughter for those. Veganism turns from that demand. With there being crop deaths we may choose ways for that to be less. Veganism has less crop deaths than crops for continually feeding the animals being used for the demand for animal products. We can grow some of our own food when possible, too. If we do, crops do not make as much sense. They attract pests. But plants used for food growing just among other plants are not attracting the insects or small animals that crops would. Plants for food can be mixed among any other compatible plants.
Being non vegan is not causing less crop deaths. duh
Really new vegans might say they miss cheese, or maybe something else. Generally there are addictions to certain substances among those to get past, but it fortunately does not take long. Find vegan things you really like to have about as often instead, those really should be healthy things, not just processed stuff. I found I could have a really great sauce that I like so much in my cooked meals almost all the time, with putting some hummus and some medium salsa in them. I use La Victoria, and I add good seasonings I like, but do not add salt to anything. And for other things I would sweeten I use something other than sugar, where I am, bone char is used to filter them so the sugar is not vegan, unless it is a brand verified as vegan, now I generally use agave nectar. Gelatin is from animals too.
I use beans or lentils still, too. I do not really use tofu though, but do not find any fault for using it.