3- Omega 3 fatty acids deficiency:

Omega 3 fatty acids are docosahexaenoic acid DHA, eicosapentaenoic acid EPA, alpha-linolenic acid ALA these 3 fatty acids are extremely important for our health through their positive effect on brain health and increasing HDL levels and lowering cholesterol levels to decrease the cardiovascular disease risk and their action in fighting inflammation and delaying neurodegenerative diseases like dementia they have been essential for our bodies and the main source for supplementing ourselves with them is seafood but some plant foods are also good sources for ALA fatty acid mainly flaxseeds, Chia seeds and walnuts they are rich sources of omega 3 fatty acids that every vegetarian should add to their diet in healthy amounts to give the body its much-needed content of healthy fats.
The daily recommended intake of omega 3 fatty acids for adults is 1.1:1.6 grams which are more for pregnant and lactating females.