My late grandfather used to chew mahogany seeds regularly. He said it has some health benefits. He failed to discuss the details though.
His seeds reserved were running out so he asked me if I can find some for him. I knew several mahogany trees but they are too high for me to climb. I admit, I am not a good climber. I tried to find fallen fruit but failed.
Brother told me that finding a whole fruit on ground was almost impossible. The mature mahogany fruit breaks apart while still attached to tree branches. The light seeds scatter with the help of blowing wind.
After few weeks, grandpa threw away all the mahogany seeds. He heard from news and peers that it is toxic to human.
I did some digging!
Swietenia mahogani Jacquin (Mahogany) is known for treatment of diseases like hypertension, cancer, amebiasis, chest pains and intestinal parasitism. It was reported to be abortifacient but not supported by any scientific studies. I cannot find any supportive evidence either.
K Bacsal and company, found that mahogany seeds has potential effect on healing gastric ulcers due to phospolipid and long chain unsaturated fatty acid content.
The website mimf.com listed mahogany in their toxic wood list. Mahogany, American: sensitizer/respiratory, eye & skin/small/dust/rare. Mahogany, African: sensitizer/respiratory/great/dust/rare.
According to wilderness-survival.net, all parts of the tree should be considered dangerous if eaten. Its leaves are a natural insecticide and will repel insects from stored fruits and grains. Take care not to eat leaves mixed with the stored food.