They are full of antioxidants, which are pretty much the best things ever
Sunflower seeds are an excellent source of vitamin E, an important antioxidant with incredible anti-inflammatory properties, which can assist those with asthma, arthritis, and other annoying afflictions (can I get an amen?). Antioxidants like vitamin E also fight free radicals, which is not a nickname for your parents in the '60s, but instead refers to these crazy, unstable atoms in the body that have been connected to such buzzkills as heart disease and cancer.
They can improve your mood
Sunflowers have a reputation for making people happy, and it's not just because of their cheerful appearance. Their seeds are loaded with magnesium, a mineral that may help alleviate depression, insomnia, headaches, and other life ruiners. Our ancestors got plenty of magnesium from fish, organ meats, and produce grown in mineral-rich soil, but today we have to make an extra effort to incorporate it into our diets. So if you A) like being happy, and B) think they call it "offal" for a reason, skip the sweetbreads and score some sunflower seeds instead.