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Hemp seeds are better. Covers all your omega 3 fatty acids in 3 tablespoons + all your manganese and most of your magnesium and 20% of zinc . Also has 10 grams of protein. Super healthy food + makes the smoothie creamier :)

ive tried hemp coz of the above reasons,it didnt last long i think coz of the texture in my tongue ;) am not so sure if sesame and sunflower seeds are in the same category when it comes to nutrients.

You can compare the nutritional value of these two things (hemp seeds and sesame seeds) at cronometer.com, to be sure what you're getting from both of them.

One thing that stands out between the two is 170 calories from 3 tablespoons of hemp seeds versus 946 calories from 1 cup of sesame seeds.

One cup equals 16 tablespoons, so 1 cup of hemp seeds equals about 906 calories ([16/3] * 170). They're close, but the hemp seeds beat them out for dietary calorie content, should you be concerned about the potential weight gain associated with upping seed (healthy fat) consumption.

Oh yeah, and I also forgot to mention that the 3 tablespoons of hemp seeds (also hemp hearts) covers over half of the daily suggested intake of iron and 64% of phosphorous. It's good stuff :)

yes you can add nuts. but becareful to not add too many because of the fat and calories