Dietary deficiency: Vegans (strict vegetarians who do not eat any meat, fish, egg, or dairy products) can develop vitamin B 12 deficiency because they lack vitamin B 12 in their diets
Vitamin B12 primarily comes from animal-based products, which makes those who follow vegetarian and vegan diets more likely to develop vitamin deficiency
Low B12 levels can cause fatigue, weakness, shortness of breath, headaches, digestive changes, and other symptoms
Injections can bypass the digestive system and directly supply the body with adequate vitamin B12, ensuring that those affected can maintain healthy nerve and red blood cells
Overtraining can actually impair fat loss through hormonal disruption
Jaka Vukojevi, Marija Milavi, Darko Perovi, Spomenko Ili, Andrea Zemba ili, Nataa uran, Sanja trbe, Zoran Zorii, Igor Filipi, Petrana Brei, Sven Seiverth, & Predrag Sikiri