> ## Content Index > Fetch the complete content index at: https://the-healing-plate.ghost.io/llms.txt > Use this file to discover other available public pages before exploring further. # The pumpkin seed trial had 1,431 men. Here's what it found - URL: https://the-healing-plate.ghost.io/the-pumpkin-seed-trial-had-1-431-men-heres-what-it-found/ - Published: 2026-11-02T17:00:00.000Z - Updated: 2026-11-03T16:05:44.000Z - Description: Squash was farmed in Mexico long before corn or beans. Here is what the flesh and the seeds really do for you, and where the proof runs thin. - Author: The Healing Plate Squash was farmed in Mexico long before corn or beans. Here is what the flesh and the seeds really do for you, and where the proof runs thin. If you're past 50, your doctor has likely told you to eat more fiber and more potassium. You may also have heard that pumpkin seeds are good for a man's prostate. And right now, squash is piled high at most grocery stores. But the orange in squash barely gets into your blood unless you eat it with some fat. The seed story is only half true, too, and that half is worth knowing before you pay for pills. So let's look at what the flesh and the seeds really do. The story starts in a cave in Mexico... In 1966, a University of Michigan archaeologist named Kent Flannery dug into a dry cave in Oaxaca, in southern Mexico. The cave is called Guilá Naquitz. In the dust he found squash seeds, bits of rind and stems. Some seeds were too big to be wild. They looked farmed. But for years, people fought over how old they were. In 1997, Bruce Smith of the Smithsonian settled it. He used a radiocarbon test that needs only a speck of the seed. His results ran in the journal Science. The seeds were up to 10,000 years old. They came from Cucurbita pepo, the plant that gives us pumpkins and zucchini. That is more than 4,000 years before the first dated corn or beans in the Americas. So squash may be one of the oldest farmed foods on your plate. It belongs to the gourd family, with cucumbers and cantaloupe. And its seeds, called pepitas, are at their freshest right now, in the fall... ### Sponsored This bottled water = heart attack You can drink water the “wrong way”… …and increase your risk of heart attack by 42%. I know that sounds crazy. But it’s true…and it’s happening to millions of Americans right now. 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Your body turns some of them, like beta-carotene, into vitamin A. Call them the orange pigments from here on. The orange pigments melt in fat, not in water. So a plate with no fat at all leaves most of them stuck in the food. Iowa State University tested this in 2004\. Melody Brown and Wendy White fed seven people salads with three kinds of dressing. One had no fat, one had 6 grams of canola oil, and one had 28 grams. Then they drew blood every hour to see what got in. **THE FINDING:** In a 2004 Iowa State University study in the American Journal of Clinical Nutrition, almost no beta-carotene reached the blood when the salads came with fat-free dressing. A reduced-fat dressing let more in, and the full-fat dressing let in the most. Only seven people took part, and the test used salad, not squash. But the carrots in those salads carry the same beta-carotene that squash does. ## Steam Beats A Hot Oven Heat is the other half of the deal. Cooking softens the walls of each plant cell, and that can help let the pigments out. But heat can also break them down. In 2018, Caterina Bergantin and her team at the University of Ferrara, in Italy, cooked two kinds of pumpkin for 20 minutes each. Steamed pumpkin lost less than 10 percent of its beta-carotene and lutein. Pumpkin from a 200°C oven, about 390°F, lost about 30 percent. That was a lab test, not a test in people. Still, it gives you a plain rule. Steam the squash, then add the fat at the table. ## What One Cup Gives You Take a look at plain canned pumpkin, using numbers from the U.S. Department of Agriculture. One cup holds about 7 grams of fiber and 505 mg of potassium. A medium banana has about 422 mg. So the can wins on potassium, and it has more than twice the fiber of that banana. That same cup carries about 1,900 micrograms of vitamin A in plant form. The National Institutes of Health sets a daily goal of 900 micrograms for men and 700 micrograms for women. Is that too much? No. The upper limit is for the ready-made vitamin A in liver and pills. It does not apply to the beta-carotene in plants. The seeds are a food of their own. One ounce of dried pumpkin seed kernels holds close to 170 mg of magnesium, plus zinc and protein... ## The Seed Trial, Read Closely In Styria, in southern Austria, farmers have grown pumpkins for their seed oil for about 300 years. Around 1880, a pumpkin turned up with seeds that had no hard shell. That quirk saved long winter nights of peeling by hand, and it is why you can buy green pepitas today. Those seeds have a long folk tie to men's health. In Germany, a team led by Winfried Vahlensieck put that to a real test. The trial was called GRANU. It took 1,431 men aged 50 to 80 with urinary trouble from an enlarged prostate. One group ate 5 grams of pumpkin seed twice a day. A second group took capsules of seed extract. The third took a dummy pill. After a year, the team counted the men whose symptom score fell by 5 points or more. In the seed group, 58.5 percent got there. The dummy pill group hit 47.3 percent, and the extract did no better than the dummy pill. Of course, read the fine print. Nearly half the men on the dummy pill got better too. The trial was only partly blinded, and the authors called the seed result clinically relevant but did not claim firm proof. I also could not find who paid for it. It ran in Urologia Internationalis in 2015. A smaller trial in Korea, from 2009, tried pumpkin seed oil in capsules. Only 47 of the 62 men finished. Scores fell in each group that got oil, but after a year no group pulled clearly ahead of the others. One author worked for a biotech company. ## And The Flesh? I found no trial of squash itself and the prostate. The closest thing comes from the Fred Hutchinson Cancer Research Center in Seattle. Alan Kristal's team tracked 4,770 men for years. Men who ate four or more servings of vegetables a day had about a 32 percent lower risk of an enlarged prostate than men who ate less than one serving. It ran in 2008 in the American Journal of Epidemiology. That study watched people. It can't show the vegetables did the work... ## Three Things Worth Knowing At The Store 01 #### Never Eat It Fat-Free Toss squash with a spoon of olive oil, or eat it next to eggs, nuts or cheese. In the Iowa State test, almost no beta-carotene got in when the meal had no fat at all. 02 #### Canned Is Fine. Pie Filling Is Not. A can marked 100 percent pumpkin is just cooked pumpkin. Pie filling has sugar and spice added, so check the label before it goes in your cart. 03 #### Save The Seeds From Saturday If you carved a pumpkin for Halloween, keep the seeds. Rinse off the pulp, pat them dry, toss them with a little oil and salt, and roast them until they turn golden. ### Here's What I'd Do This Week - **Steam one squash.** Cut a butternut into cubes, steam them soft, then pour on olive oil at the table. - **Stock two cans of 100 percent pumpkin.** Stir half a cup into soup, chili or a bowl of yogurt. - **Weigh out 10 grams of pepitas.** That is the daily amount of seed the German trial used, and a kitchen scale will show you how small it is. - **Tell your doctor about any new urinary trouble.** Seeds are food, and new symptoms still need a checkup. Ten thousand years ago, someone in Oaxaca kept the big seeds and planted them again. That was one of the first steps of farming in the Americas. You don't need a cave to get the good out of it. All it takes is a squash, a spoon of oil and a few seeds. So buy one squash this week. Steam it, oil it, and eat it before Friday. **Stay well,** The Healing Plate You're receiving this because you subscribed at [Unsubscribe](%%{unsubscribe%5Furl}%%) · [Preferences](%%{manage%5Faccount%5Furl}%%) · [Forward to a friend](mailto:?subject=The%20pumpkin%20seed%20trial%20had%201%2C431%20men.%20Here%27s%20what%20it%20found&body=Something%20worth%20reading%20from%20The%20Healing%20Plate%3A%20https%3A//the-healing-plate.ghost.io/) For educational purposes only. Not medical advice. Not a substitute for professional care. Always consult your healthcare provider before making changes to your diet or supplements.