It’s holiday time with Thanksgiving this Thursday and Christmas and New Year’s Day just around the corner. This means all sorts of good tasting food — ham, roast turkey, bread stuffing, green beans, cranberry sauce, sweet potatoes, wine and pumpkin pie.

What better time than during this festive period to give thanks for the most wholesome food supply in the world. Yes, Americans enjoy one of the best food supplies on this planet not only in terms of abundance, variety and cost, but also in terms of safety.

A closer look at a typical dinner menu reveals Mother Nature and her chemicals will be joining all of us who partake of the traditional holiday fare in this country. In a typical soup-to-nuts holiday menu, here are some of the natural chemicals, which in large quantities could be hazardous to a person’s health, according to the American Council on Science and Health. Such effects would occur only if the concentrated substances were consumed in excess.

Saying this is not intended to frighten some who already are chemical phobic. For centuries, humans have eaten potentially toxic substances that occur naturally in food.

The natural and man-made toxins, carcinogens and mutagens in the U.S. food supply remain so small they pose no known health hazard, the ACSH reports. A toxic dose of caffeine requires 96 cups of coffee, and you would have to eat 3.8 tons of turkey this holiday season to deliver a toxic dose of malonaldehyde.

Mushroom soup, for example, contains hydrazines, which are potent animal carcinogens. A fresh vegetable tray is chalked full of nitrates. The main entrée, roast turkey with stuffing and cranberry sauce, contains heterocyclic amines and malonaldehyde, eugenol and furan derivatives, according to the ACSH.

It’s way past time for the American public to stop acting on the presumption that “natural” is safe and “manmade” is always suspect. While both can be toxic in excess, present scientific knowledge indicates neither natural nor man-made food chemicals are hazardous in the quantities we consume on a daily, monthly or yearly basis.

Toxins, carcinogens and mutagens are everywhere in Mother Nature’s food supply. It is unwise to panic about minute levels of man-made chemicals such as the traces of pesticide residues occasionally detected.

If there is a health problem we should be concerned about during this upcoming holiday season, it might be overeating. If you don’t watch yourself, you can gobble down more than 2,000 calories easily at one sitting. It doesn’t take a food scientist from ACSH to tell you you’ll wind up stuffed like a turkey if you eat like that during the holiday season.

As most of us know, excessive eating has been called the “most striking” carcinogen ever discovered in rodent carcinogenicity studies. In other words: “Fat rats get cancer.”

Remember, when you sit down at the holiday table this season, leave that last leg of turkey or piece of pie for someone else. You don’t have to eat every last roll on the plate, and yes, Fido, the family dog, might enjoy those last three or four spoons of gravy.

Eat moderate quantities of a wide variety of foods this holiday season and throughout the entire year. Despite the presence of Mother Nature’s toxins, they are not dangerous when consumed in moderation as part of a balanced, varied diet.

John Schlageck is a leading commentator on agriculture and rural Kansas. Born and raised on a diversified farm in northwest Kansas, his writing reflects a lifetime of experience, knowledge and passion.