<p>Consumption of Polyphenols in Coffee and Green Tea Alleviates Skin Photoaging in Healthy Japanese Women</p>

Abstract

Purpose: Hyperpigmentation of the skin can occur at any age depending on etiological factors but its intensity increases during adolescence in Japanese females and gradually develops further in adults. The purpose of this study was to characterize factors that influence skin hyperpigmentation, including age, skin type and dietary polyphenol sources. Patients and Methods: A cross-sectional survey of healthy Japanese women aged from 30 to 60 years (n=244) was conducted using food and environmental questionnaires and a VISIA™ facial photoimage analyzer. Results: UV Pigmented Spot (PS) scores correlated negatively with the consumption of total polyphenols (TPs) (R=−0.224, p<0.001) and the rate of hyperpigmented spot development (PS score/age after 18 years of age) was suppressed by the consumption of TPs. This trend was independent of the melanin index and the skin type, which indicates the ability of the skin to tan after sun exposure. Consumption of coffee, the largest source of TPs, suppressed the PS score (p<0.001). Consumption of green tea, the second largest source of TPs, also suppressed the PS score, which was weaker than coffee but was statistically significant (p=0.029). The PS score was suppressed the most in subjects with both a high consumption of coffee and green tea. Conclusion: Higher consumption of TPs may be beneficial to alleviate photoaging of the skin, and coffee as well as green tea contribute to suppress skin hyperpigmentation through adding large amounts of TPs in the diet.

Coffee pulp supplement affects antioxidant status and favors anti‐aging of skin in healthy subjects

“…Polyphenols in coffee have been demonstrated to retard the development of hyperpigmented spots and UV pigments in Japanese women. 37 The results concerning spots (Figure 2A,B) and UV (Figure 2C,D) spots herein prove the efficacy of coffee pulp extract in the depigmentation and attenuation of tyrosinase activity (Table 2). The 8-week CPD intervention reduced the mean levels of the spots and UV spots of the subjects by 6.8% and 4.7%, respectively, relative to the baseline levels.…”

“…Moreover, accumulative sun damage causes the formation of UV spots, which are invisible under normal lighting conditions, below the skin surface. Polyphenols in coffee have been demonstrated to retard the development of hyperpigmented spots and UV pigments in Japanese women 37 . The results concerning spots (Figure 2A,B) and UV (Figure 2C,D) spots herein prove the efficacy of coffee pulp extract in the depigmentation and attenuation of tyrosinase activity (Table 2).…”

Review on oral plant extracts in Skin Whitening

“…Meanwhile, in B16 melanoma cells, EGCG inhibited a-MSH-induced production of melanin (Roh et al, 2017). UV Pigmented Spot (PS) scores reduced by the consumption of green tea (Fukushima et al, 2020). Thus, Green tea polyphenols can be considered as inhibitors of tyrosinase activity and expression of melanocyte, thereby inhibiting melanin synthesis…”

Dietary Polyphenols in Cancer Chemoprevention: Implications in Pancreatic Cancer

“…Polyphenols constitute a large family of phytochemicals, present in a wide variety of fruits, vegetables, flowers, and leaves [7][8][9][10][11]. Epidemiological studies also support the fact that consumption of a natural polyphenol-enriched diet could reduce the incidence or lower the risk of pathophysiologies including cardiovascular diseases [12][13][14][15][16]. However, other reports have documented contrasting or inconsistent evidence for polyphenols intake against cardiovascular diseases and cancer [17][18][19][20].…”