Insufficient Evidence for:
A kind of arthritis called osteoarthritis. There is some clinical evidence that gelatin might relieve pain and improve joint function in patients with osteoarthritis.
Brittle bones (osteoporosis).
Strengthening bones and joints.
Strengthening fingernails.
Improving hair quality.
Weight loss.
Shortening recovery after exercise and sports-related injury.
Other conditions.
More evidence is needed to rate the effectiveness of gelatin for these uses.