The loss of ability to absorb vitamin B 12 (B 12) is the most common cause of adult B 12 deficiency. Impaired absorption of vitamin B 12 may be due to a loss of intrinsic factor or to a number of other conditions that decrease production of gastric acid, which also plays a part in the absorption of B 12 from foods.
One of the best natural insect repellent is Lemon Balm. If you insist to go for organic route, Lemon Balm which contains high Citronellal contents is able to repel insects such as mosquitoes, flies, ants and etc. However, Lemon Balm does not deter butterflies or bees.
The scent of sunblock and mosquito repellant will just have to do during the day. 4. Drink lemon juice. There's a reason why most insect repellants have a lemon scent and that's because for some reason mosquitoes don't like it! Adding a bit of lemon juice to your water can help you to avoid attracting mosquitoes.