Flaxseed oil is okay to take. I have never heard that men should not take it. Flaxseeds are rich in omega 3 fatty acids, magnesium, potassium, and fiber. There also a good source of B vitamins, protein and zinc. Also, they are low in saturated fats and cholesterol. Also taking flaxseeds or the oil form can help reduce pain and inflammation, and swelling, as well as, the effects of arthritis. So, overall its a good and healthy supplement to take.