Monday, November 5, 2012

What are GMOs and Why Should We Care About Labeling Them?


GMOs, or Genetically Modified Organisms are plants that have had their DNA altered by inserting genes from other species. This is done to increase a plant’s tolerance to various environmental factors, such as drought, or non-environmental factors, such as herbicides or pesticides.

Traditional means of genetically altering plants have been carried out for hundreds of years by crossbreeding. This is a process where geneticists take plants with traits they desire, and cross (or mate) the plant with another similar plant that they hope to enhance the traits their looking for.

My father was a hop-geneticist; he was responsible for creating some of the most widely used varieties of hops in the US brewing industry. I grew up with plant breeding and science, and knew it to be a safe way of creating new varieties of plants. This has been done for hundreds of years to create many of the crops we commonly eat today, including tomatoes and potatoes.

However, this type of genetic manipulation is time consuming. It can take many years (sometimes as long as 30 years!) to achieve what the breeder is working towards, and sometimes, the results never work out the way the breeder hopes.

This is where GMOs come in. Scientists by-pass the time-tested method of cross-breeding and just pluck the desired trait out of one organism and put it into the DNA of another.

This can have beneficial results, such as creating a variety of potato that is resistant to blight (a potato disease that was the cause of the Great Irish Potato Famine of the 1800s). It can also help crops to produce more, as in the case of some corn and wheat. All positive things when we’re looking at feeding billions of people.

However, the flip side of this practice is where the entire Prop 37 campaign comes in. This proposition is on the ballot for the simple fact that many plants that are part of our food chain now have been altered with non-plant based products, such as herbicides, pesticides and antibiotics!

A common practice among large commercial farms is to only plant GMO plants that are resistant to herbicides and pesticides. It’s very costly to weed large farms so growers spray their entire fields with a swath of herbicides to kill the weeds and pesticides to kill pests. Why doesn’t this kill their crops? Because those very same herbicides and pesticides have been bred into the genes of the plants we’re eating to be resistant to these chemicals, so you’re eating herbicides and pesticides whether you know it or not.

Why is this something these huge commercial farms and growers like Monsanto are trying to protect by dumping millions of dollars into fighting Prop 37? It’s all about money. Once these Genetically Modified Plants go into production, these companies hold patents on these plants, and no one can grow them without paying Monsanto (or whomever holds the patent) a fee. It’s about controlling supply and could have dramatic impact worldwide on how food is grown and who can grow it. As the bio-diversity declines, so too does the type of plants the world can grow to get food.

There are a lot of unknowns here, but the biggest unstudied potential problems are how these plants will affect the environment when their genes cross breed with other similar plants, a process called “wind pollination” or by natural cross pollination done by bees and other insects hopping around from plant to plant.

Suppose an organic farmer has his/her small organic farm across the road from a large commercial farm. The organic farmer is planting heirloom varieties of tomatoes (non-GMOs), and across the road, the commercial farm is planting the GMO tomatoes. These farmers cannot keep the wind and insects from visiting each other’s farms. Inevitably, cross-pollination occurs, and the small organic farmer may produce a tomato plant that has the GMO tomato traits of being resistant to herbicides and pesticides.

Monsanto can sue that small farmer because he/she did not pay Monsanto (or whom ever holds the patent) the Patent fee to grow that tomato!  This sounds extreme, but this is actually one of the scenarios that has occurred.

One of the other things not addressed with these genetically modified plants is the effect it’s having on the pollinators. What’s happening with the decline in the bee population could very well be a side effect of the GMO plants with pesticides bred into them. We don’t know though; no study has been done yet.

This is why labeling GMO based food is so important. Europe passed a similar law a number of years ago. There is currently a ban on importing certain food products from the US because there is no way to identify GMOs versus non-GMOs.  Europeans don’t want to be accidently eating herbicides, pesticides and antibiotics, and honestly, I don’t either.

As a master gardener, I work around all types of plants and I have an organic garden. I assume everything I am growing is free of herbicides and pesticides because that’s how I’ve designed my garden. I consciously choose to garden in as environmentally harmonious way I can, and that means using mechanical means to deal with weeds (hand pulling) and good gardening practices to deal with pests (choosing plants that attract beneficial insects to my garden). There are not many commercial farms around where I live, so hopefully none of the food I’ve been growing has been contaminated, but I honestly don’t know.

The opponents of Prop 37 are running a campaign of fear, saying this type of labeling will drive up costs at the grocery store, put small farmers out of business; create panic and confusion in the market place. They focus on how “illogical” the bill is, pointing out that certain items must be labeled, while others will be ignored (meat for example). Currently there is no GMO meat that is in production for the consumer market place. There will be salmon available soon, but currently, it is not on the market either. So yes, meat and fish will not be subject to labeling because they are not currently being genetically modified.

Opponents talk about how cat and dog food must be labeled, but human food in restaurants won’t. Pet food would be labeled because most of it contains items that are almost exclusively a GMO such as Corn and most pet food contains some corn. As for restaurants, all agreed it would be much too complicated to label food at restaurants. There is no clear way to do this. However, by labeling the sources of food that most restaurants use, those businesses can choose what they use to prepare their dishes, and can use this to their marketing advantage. So this too is a mute point.

There are so many reasons to start labeling these types of foods that are being made more and more available to the public. We already know that the practice of over-using agents such as pesticides, herbicides and antibiotics creates resistance through natural selection. By allowing the public to make informed decisions about what they are ingesting, not only are we educating the population, we are looking forward to protecting our already fragile environment, where bacteria and viruses are becoming immune to the chemicals we used to rely on to control them. This means continued creation of stronger and more powerful chemicals used in the production of our food if we don’t get a handle on this.

Really, the only thing to focus on is the fact that very little research has been done on the effects of GMOs on our bodies or on the environment. It is totally irresponsible to let these giant corporations dictate how we live by keeping us in ignorance.

Californians, I urge you to join me in voting YES on Prop 37 http://www.carighttoknow.org/ 

If you want to read more on GMOs, please read this excellent article, written in 2000, way before this was a topic of national interest:
http://www.csa.com/discoveryguides/gmfood/overview.php

No comments:

Post a Comment