As of now, there has been no conclusive evidence that any form of TD (or any other sunscreen filter) harms coral reefs or marine life
While the current body of evidence has predominantly focused on fat versus lean mass, relatively few studies (mostly subgroup analyses) have examined SMI, ASMI, and physical performance
For references and more information , see the section congestive heart failure in the Vitamin D article
Effectiveness: For patients without co-morbid depression or contraindications, Adderall and other stimulants usually provide a stronger and more immediate reduction in ADHD symptoms, with duration of effect lasting several hours, depending on the particular version of stimulant
Supplements are not cures, and anything tied to a health condition should be vet-guided
The one honest exception: TB-500 works partly by mass-action, so a higher local concentration in the brief window before it disperses is at least plausible