hi there i understand what you are feeling, my and DF were overweight and spent almost 2 years TTC and were about to start treatment but we made lifestyle changes he lost 15 kilos and i lost almost 20 then 3 months later we fell pregnant! i put him on menevit and i got onto vitamins and i truly believed the weight loss improved the sitatuation, my thyroid was back to working order and his sperm count obviously increased! we didnt drink or smoke either, there is no harm in giving it a go not just TTC but for your own health. good luck!