Table 1:

The top 10 most frequent research topics being studied on pine pollen’ pharmacology

Rank	Study topics	n (%)
1	Immune regulation	36 (20.0)
2	Antiaging	25 (13.89)
3	Antioxidation	20 (11.11)
4	Liver protection	16 (8.89)
5	Inhibiting tumor cell proliferation	15 (8.33)
6	Inhibiting prostate hyperplasia	12 (6.67)
7	Antifatigue	8 (4.45)
8	Lowering blood glucose	7 (3.89)
9	Lowering blood lipids	6 (3.33)
10	Improving intestinal function	6 (3.33)
Total (top 10 topics)		151 (83.89)
Percentage=(n/180)%