The Science that Proves Vegans Have Better Sex


Have you heard the rumour that vegans have better sex?

Well, it might be mostly vegans who are spreading that rumour, but that does not mean it is not true. There’s even a book about it, by Dr. Joel Kahn, Ellen Jaffe Jones, and Beverly Lynn Bennett.

But what does science have to say? Let’s look at the top four scientific findings that prove that vegans have better sex:

1. Stronger Heart, More Love

Hoping that things will start looking up in the bedroom? One of the best things that men can do is make sure that their arteries are free of plaque.

What’s the connection between heart health and sexual health? Plaque forming on arterial walls constricts blood flow to the penis, which hinders your ability to get an erection. Vegans tend to have less plaque in their arteries, even when compared to active omnivores, and that is a good thing for your heart, and for your, ahem, performance.

Did you know that erectile dysfunction can be an early warning sign of cardiovascular disease? Erectile dysfunction may signal that a heart attack or stroke is likely in the next three to five years.

The good news is that you can reduce your risk of erectile dysfunction and heart attack at the same time with a plant-based diet.

One study of Canadian men with diabetes reported that participants had a 10% lower risk of erectile dysfunction with every daily serving of fruit and/or vegetables.

The flavonoids in the fruits and vegetables may explain this improvement. Flavonoids are phytonutrients found in plants; they are responsible for the bright colours of many fruits and vegetables. And keep in mind that you can find flavonoids elsewhere. Many teas, herbs, and wines provide some level of these beneficial phytonutrients.

So how can flavonoids help in the bedroom?

When scientists analyzed 10 years of dietary and health data from 25,000 American men, they found that men with diets rich in flavonoids had a 11-16% lower risk of developing erectile dysfunction.  

Thus, we find that a plant-based lifestyle rich in fruits and vegetables is an evidence-based way to ensure a healthy heart and a healthy love life. The simple reason: those individuals are more likely to have great blood flow, in and out of their hearts and to all other important organs as well!

2. Female Fertility

Problems with fertility can be heartbreaking, and couples will try everything they can to maximize their chances of having a family. The good news is that research suggests one of the most cost-effective and easiest solutions is simply changing your diet!

Harvard researchers authored the book, The Fertility Diet, based on the Nurse's Health Study which recommends the following to improve fertility:

  1. Keep to a healthy weight. (Vegans are more likely than the rest of the population to be in the healthy weight range, by the way).

  2. Eat vegan, iron rich foods, which can help prevent problems with ovulation.

  3. Eat more vegan protein and less animal protein.

  4. Eat foods high in fibre, including whole grains. (Where does dietary fiber come from? Plants!)

Even if they don’t know it, people consuming a whole food, plant-based diet are already following these recommendations, which can help to boost fertility.

3. Your Nose Knows

We all know that scent is a big part of attractiveness — and an easy way to repel those around you.   

What does scent have to do with diet? Would you believe that women are more attracted to the body odor of men who don’t eat red meat?

It’s true! At least one study shows that the body odor of men who gave up red meat for two weeks was more attractive to women than the body odor of red-meat eating men.

While we don’t have science to prove it, anecdotally we know that vegan body secretions also taste better. Another great reason to eat a whole-food plant-based diet!

4. Stamina

Endurance athletes like Rich Roll and Scott Jurek demonstrate that it is possible to have great athletic performance on a vegan diet, even in your 40s and 50s, which bodes well if you are dating a vegan guy.

Unsurprisingly, veg female athletes also have superior cardiovascular fitness when compared with female omnivorous athletes. We all know that women are often capable of multiple feats of endurance.

The big question is, does running endurance translate into stamina in the bedroom? I think we may just have to hypothesize on that one, but our professional opinion is, yes!

Want to find out more? Check out Dr Joel Kahn’s book on the subject, or maybe do your own research! It could be quite exciting. Sex can be a lot of fun, vegan or not, but it is even more rewarding to share with someone who respects their own body, the planet and the animals. Is it better as a vegan? Science seems to say, (probably) yes. You tell us!


To learn more about specific nutrients of which vegans and vegetarians should be mindful, click here.

Or continue reading Dr. Fergusson's articles on the five nutrients that cause the most confusion:

Vitamin B12

B12 is an essential nutrient for human health. Vitamin B12 is required for proper red blood cell formation, neurological function, and DNA synthesis. What’s more is that you must consume adequate amounts to avoid pernicious anemia. There are no adequate plant-sources of B12— despite what you might have heard about eating “dirty” vegetables. We'll start with the story behind that idea to better understand why it's critical to complement your plants with a B12 source. Continue reading...

Vitamin D3

Vitamin D is known as the “sunshine vitamin” because our body, like other animals, synthesizes D in reaction to sun exposure. Getting enough vitamin D is essential to prevent vitamin D deficiency diseases like rickets and osteomalacia, and recently researchers have discovered that higher levels of vitamin D may be beneficial in preventing a host of conditions, including fibromyalgia, rheumatoid arthritis, multiple sclerosis, upper respiratory tract infections, premenstrual syndrome, polycystic ovary disease, psoriasis, muscle weakness, lower back pain, diabetes, high blood pressure, cancer, and asthma. Increased levels of vitamin D might even improve your mood and mental health. Continue reading...


We've all heard of the importance of "Omega-3s", but we don't often hear that not all Omegas are created equal. Omega fatty acids from flax or chia seeds — the "ALA" kind — are an amazing addition to your plate, but plant-based people may not adequately intake other forms — namely, DHA and EPA — which are also critical for cardiovascular and brain health. Continue reading...


Your body relies on iodine in order to create essential thyroid hormones. Without those, you would be unable to properly regulate metabolism and other vital functions. This process is even more important for pregnant women and children because a growing human relies on thyroid hormones for bone and brain development. Continue reading...


Zinc is an important nutrient with a complicated story. Our body utilizes zinc in a variety of ways. In fact, the mineral helps stimulate the activity of more than 100 enzymes. It also supports proper immune function; plays a role ensuring normal growth; and even helps neurons communicate, thereby enabling memory formation and learning. Studies have even shown that zinc can help stave off age-related chronic illness by combating systemic inflammation. So where do we find this powerful mineral? Continue reading...


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