Guide

Yes, overdoing workouts can be fatal in rare cases, usually through heart strain, heat illness, or severe muscle breakdown.

Yes, excess vitamin B12 can cause side effects for some people, and high blood levels may point to an underlying issue.

Yes, cardio can trim muscle when volume, food, protein, or rest fall short; lifting and steady meals protect lean mass.

Yes, hard training can raise erection trouble through fatigue, low fuel, hormone shifts, stress, or injury.

Heavy caffeine intake doesn’t usually cause impotence by itself, but poor sleep, jitters, and blood pressure spikes can hurt erections.

Yes, heavy caffeine intake may worsen shedding indirectly, but it’s rarely the lone reason hair thins.

Yes, heavy drinking can trigger loose stools by irritating the gut, speeding bowel movement, and upsetting fluid balance.

Extra vitamin B12 may trigger loose stool in some people, mostly with high-dose pills, shots, or sensitive guts.

No, vitamin B12 has no set upper limit, but high doses can cause side effects and may hide other health issues.

For most people, high-dose B12 is low risk, but large doses or high blood levels can bring side effects or point to a condition.