safe to ingest commercial weed?

the consensus seems to be that low grade weed works best for cooking. Maybe I'm being paranoid, but wouldn't mass produced field grown weed that ends up being shwag or mid grade have a greater chance of containing harmful chemicals such as pesticides? I don't know anything about the process of growing fields of weed outdoors but I assume that this is where mid grade weed comes from, the kind that has sticks and stems in it. If mid grade weed does in fact contain harmful chemicals I would think it would be a lot safer to smoke it than eat it (the chemicals are metabolized in your liver when eating). Am I alone on this concern? Anyone out there know anything about what commercial growers spray on their crops? Two nights ago I ate a couple grams of mids and I had a loss of feeling in my right leg that I still haven't completely regained. And I read that toxic chemicals can cause nerve damage. Also, I prefer to eat the actualy weed, as opposed to filtering it out, since you preserve more of the THC this way. Would it be safer to eat the weed butter/oil with the weed filtered out left in? I wouldn't think there would be any difference unless there are toxic chemicals that dont get released like the THC does. What do you all think?

The chemicals enter your bloodstream when you smoke it and ultimately get metabolized by your liver anyway.

If you are concerned about pesticides, grow your own, or find a source who can guarantee that you are getting organic buds, just as you would for the food you eat.

Luckily, the pesticides commonly used on cannabis are things like pyrethrin, neem, and sulfur- the first two being very VERY safe plant-derived substances, and the latter being used as an anti-fungal in many types of greenhouses, not simply ones that produce cannabis.

Good question though.

why not try water curing your low grade weed and then cooking with it