More and more people are considering alternative diets and try to avoid any kind of animal derived foods.
If meet products are reduced, the intake of cholesterol, saturated fat, and pro-inflammatory omega-6 fatty acids are reduced as well. On the other hand, vegans and vegetarians that do not consume fish can only get omega-3 fatty acids from plant based short chain omega-3 fatty acids, which have to be converted into the longer omega-3 fatty acids EPA and DHA. However, this conversion is very inefficient in the human body and they might end up with a very low omega-3 index.
If their omega-3 index is below 4%, they are at risk for accelerated aging, heart disease, immune defects, depression and mood swings and should consider starting to eat fish, like the Pesco –vegetarians do, or to use a supplement such a Ω Krill oil.

Swallowing a capsule that contains marine omega-3 fatty acids might be against their philosophy. On the other hand Ω Krill oil could be a very valuable omega-3 supplement for vegans and vegetarians, because it is an ecofriendly marine product that does no damage to the enviroment.