London: Hollywood actress Rachel Mcadams says she had to abandon her vegetarian diet after realizing her restricted eating habits were leaving her too "tired" to work.

The 'Sherlock Holmes' star banished all meat products from her life and instead began relying on heavy carbohydrates  to get her energy, a daily reported.

But McAdams said she eventually caved in and returned to her carnivorous ways - because her body started to deteriorate without proper nutrition.

"I was one (a vegetarian) once, but it made me very tired. I just ate pasta - I was the most unhealthy vegetarian ever! I'd like to try it again now that I know about (popular meat alternatives) quinoa and bulgur. I think I'd be better the second time around," she said.

(Agencies)