Lauren is a Registered Dietitian with over 6 years of experience in the field. She has worked in food service management, nutrition counseling, and WIC. Lauren graduated from Western Michigan University and completed her dietetic internship at Michigan State University.
So what gives? Well, what’s on your plate might actually be killing your testosterone levels.
What you eat can impact many areas of your health, including your hormones. Here’s everything you need to know about which foods might kill or boost testosterone levels.
Since diet and testosterone go hand in hand, here are some foods and drinks you may want to nix from your grocery list.
Foods like tofu, edamame, and soy protein isolate contain phytoestrogens. These plant-based substances are similar structurally to the hormone estrogen and can act similarly to it as well.
But even though soy has been heavily researched, there’s still a lot of debate as to how soy foods might eff with your hormones.
But a similar 2018 study in which men drank a soy protein supplement found no altered hormone levels.
While research remains inconclusive, it may be a good idea to avoid or eat only moderate amounts of soy products if you have low testosterone.
2. Baked goods
One muffin, doughnut, or piece of pie isn’t going to make your testosterone levels plummet. But if those foods are regularly part of your diet, it could be an issue for your testosterone.
It’s also not uncommon for baked goods to contain trans fat, which can potentially lower testosterone as well (more on that later).
According to a 2019 review, men who drink alcohol heavily have low-normal to low testosterone levels. This is a result of alcohol’s ability to hinder enzymes that help form testosterone, which was noted in a 1980s study.
In this study, healthy volunteers were given an amount of ethanol equal to a pint of whiskey each day for 30 days. They all had a drop in testosterone levels after 72 hours. And after 30 days, their levels were similar to those of heavy drinkers.
4. Licorice root
It’s not entirely known how much of an impact licorice root has on testosterone. The existing research is limited and a bit outdated and was mainly done on animals.
A 2003 study found that men who consumed 7 grams of licorice root daily for 1 week had a 26 percent decrease in testosterone levels.
And a 2016 animal study found that a chemical compound in licorice stopped the production of sex steroid hormones, including testosterone. But again, this is not totally conclusive for humans.
5. Vegetable oils
These oils contain certain monounsaturated and polyunsaturated fatty acids that may be linked to low testosterone levels.
A 2019 study in overweight men with hypogonadism (failure of the testes to function properly) found that meals containing these fats significantly reduced serum testosterone production.
The study recommends men avoid a diet high in these fats to keep testosterone levels in check, but more research is needed.
6. Trans fat and processed foods
Trans fat is often labeled “partially hydrogenated oils” (PHOs)
This ban should pretty much be in effect at this point, but artificial trans fat can still show up in some processed foods. Food companies are still allowed to list foods with less than 0.5 grams of trans fat per serving as containing 0 grams. So you can often find some trans fat in fried foods.
Trans fat may increase your risk of diabetes and cardiovascular disease *and* decrease testosterone levels. A 2017 study found that young, healthy Spanish men who consumed trans fatty acids had lower total testosterone levels.
The impact sugar can have on health — including on testosterone levels — isn’t always sweet.
However, the same study found that body mass index (BMI) was a factor. Participants with a BMI of 25 or greater also tended to have low testosterone levels.
8. Certain nuts
Aw, nuts! Walnuts and almonds *might* impact testosterone levels.
Deez nuts increase your levels of a substance called hormone binding globulin (SHBG), which carries testosterone and other hormones throughout your body. If your levels of SHBG are too high, there’s less free testosterone available.
But we need more research to conclude whether men should avoid certain nuts to keep testosterone levels regular. The available studies are older and often focused on women.
A 2011 study in women with polycystic ovary syndrome (a condition that increases female testosterone levels) found that consuming walnuts and almonds increased SHBG by 12.5 percent and 16 percent, respectively.
Enough about what kills testosterone. Here are some foods that might help give ya a boost.
1. Egg yolks
Remember back in the ’80s when no one wanted to eat egg yolks because of their cholesterol content? Research now suggests cholesterol can be converted to vitamin D, steroid hormones, and sex hormones — including testosterone.
2. Salmon, tuna, and sardines
3. Beans and legumes
Beef is another zinc-filled food. The World Cancer Research Fund recommends opting for leaner cuts and eating only about 3 portions per week (about 12 to 18 ounces total).